定语从句中which和that的区别2011-12-07 12:39:15[size=medium][color=blue]只能用that的情况：[/color][/size] 关系代词在定语从句中作表语，不管是人或物只能用that。 He is not the man that he was when I first saw him. 【他现在不是我第一次见他时那样的...
He is not the man that he was when I first saw him.
Look at the girl and the dog that are crossing the street.
1.What's the name of the animals that jumps about?
2.Who is the girl that talked to you yesterday?
This is the most interesting book that I've ever read.
1.The goverment has promised to do all that lies in its power to alleviate the hardships of people.
2.When we see anything that happen on the island, we're so glad.
3.Tom told his father all that had happened.
4.Pay attention to everything that I do.
5.The teacher wants to teach us all that he knows.
6.You must do everything that I do.
<6>当先行词被the only, the very, the first,the last,few,little,no,all,one of,the same等修饰时，须用关系代词that来引导。
The only thing that we can do is to give you some money.
Which is the bik e that you lost?
1.The picture for which he paid $1,000 was once owned by a duke.
2.The building in which Han Mei studied was very old.
Crusoe's dog, which was very old now, became ill and died.
1.Edison built up a factory which produced things
that had never been seen before.
2.Let me show you the novel that I borrowed from the library which was newly open to us.
1.In fact the Swede did not understand the three questions that/which were asked in English.
2.Colour the birds which/that are flying.
3.The pen that/which I am using is quiet good.
4.The film which/that we saw last night was wonderful!
在定语从句中which和that用法有什么区别2018-04-25 10:50:35在定语从句中,which 和that 在指代事物时,一般可以互换使用,但并非在任何情况下都是这样,这里介绍宜用that, 而不宜用which 的情况.①先行词为不定代词,all,much,something,everything,anything,nothing,none,the one...
在定语从句中,which 和that 在指代事物时,一般可以互换使用,但并非在任何情况下都是这样,这里介绍宜用that, 而不宜用which 的情况.
1.We should do all that is useful to the people .
2.There's nothing that can be said about it .
3.Do you mean the one that was bought yesterday?
②先行词被only, any, few, little, no, just, very, one of等词修饰时.
1.The only thing that we could do was to wait.
2.That's the very word that is wrongly used.
The last place (that) we visited was the chemical works.
You can take any (=whichever) seat that is free.
I hope the little that I can will be of some help to them.
比较 *This is one of the best novels that were published last year.
*This is the only one of the best novels that was published last year.
1.When we talk about Wuxi, the first that comes into mind is Tai Lake.
2.This is the third film that has been shown in our school this term.
1.This is the best that can be done now.
2.The most important thing that should be done right now is how to stop him from going on.
1.The writer and his novel that you have just talked about is really well known .
2.The rider and his bike that had run over an old woman were held up by the police.
1.Yesterday I caught two fish and put them in a basin of water .Now you can see the two that are still alive .
Edison built up a factory which produced things that had never been seen before.
1. Which is the book that you like best?
2. Who is the man that is standing at the gate?
⑨主句是There be 结构,修饰其主句的定语从句宜用that 作关系代词. 如：
1. There is still a seat in the corner that is still free.
1. That's a good book that will help you a lot.
2. My home village is no longer the place ( that ) it used to be .
1.A zoo is a park in which many kinds of animals are kept for exhibition.
2.Is this the room in which Mr. White lives?
1.Crusoe's dog, which was are now very old, became ill and died .
2.More and more people are beginning to learn English, which is becoming very popular in our country. (which指代主句)
③在一个句子中有两个定语从句,其中一个定语从句的关系代词用了that, 另一个宜用which .
1. Let me show you the novel,that I borrowed from the library which was newly open to us.
2. At the station I bought some magazines that might help me to pass the time on the train and which I could pass on to others when I finished them.
1. Here's the English grammar which, as I have told you, will help improve your English.
⑤先行词本身是that, 宜用which .
What's that which she is looking at?
A shop should keep a stock of those goods which sell best.
MRD 和PRD的区别2019-07-29 11:14:49MRD：Market Requirements Document MRD的核心： A focused definition of the target market ... Problem scenarios which document gaps or issues that various personas are currently chall...
MRD：Market Requirements Document
- A focused definition of the target market
- Buyer and user profiles
- Problem scenarios which document gaps or issues that various personas are currently challenged with
MRD is a document that is usually written by a Product Marketing Manager or a Product Manager.
An MRD usually contains the following information:
- Executive Summary
- Target Market
- Competitive Positioning
- List of Features
- Derived from market needs
- Prioritized based on ROI
The following teams usually “consume” (i.e. read) the MRD:
- Business Analysis
- UI design
PRD：Product Requirements Document
- provide the level of detail needed for the development team to understand the capabilities, functionality, and features that are required to address the market needs identified in the MRD.
- Use Cases (Functional Requirements)
- Non-functional Requirements (Such as Security, Performance, Scalability, etc)
- Requirements are also prioritized
- 多种场景因素考虑（例如：有网、无网、4G、3G、2G、wifi 、流量为未开等等）
benchmark和baseline的区别和联系2018-05-15 21:32:02baseline: a standard measurement or fact against which other measurements or facts are compared, especially in medicine or science.benchmark: something that is used as a standard by which other things...baseline: a standard measurement or fact against which other measurements or facts are compared, especially in medicine or science.benchmark: something that is used as a standard by which other things can be judged or measured.
还有一个 词经常用到：ground truth
在机器学习中ground truth表示有监督学习的训练集的分类准确性，用于证明或者推翻某个假设。有监督的机器学习会对训练数据打标记，试想一下如果训练标记错误，那么将会对测试数据的预测产生影响，因此这里将那些正确打标记的数据成为ground truth。
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