And, of course, you've got to know cows.
当然,你还得熟悉了解奶牛。
You've got to know what your application needs.
需要了解您的应用程序的需求。
So you've got to know, which things form azeotropes.
所以我们要知道哪些东西会形成共沸混合物。
You've got to know your trigonometry, you've got to know what's a sine and what's a cosine.
你们得懂三角学,你们得知道什么是正弦什么是余弦
You've got to know that really well.
你们应当已经掌握得非常好了
How does that happen? You know, you've got to appeal to social forces if you're going to talk about change.
这是怎么回事?,谈到这个变化,我们必须要理解社会中的力量。
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