Are you a good answer的意思|示意

Let's say that you are a true skeptic and you don't believe in differentials yet then it is maybe not very good that I actually used more of these differential notations in deriving the answer.

应该会有疑问的，而且还是不太相信微分，那么我的证明过程中，多次用到的微分符号，就有问题了。

Here are 3 good exercises that can help you create a strong, clear focus and of course these are answer to your question how to improve concentration.

下面的3个训练可以帮你拥有一个强有力的，清晰的注意力。当然，这也是如何改善注意力的方法。

That's a very good question, and unfortunately, there is not a single answer. There are a number of different scenarios that you may have to deal with depending upon your situation, for example

这是一个非常好的问题，遗憾地是，没有一个标准的答案。

If you know who is calling before you answer the ringing phone, you are probably a good receiver.

如果在你接电话之前就知道是谁打来的，你很可能是一个好的接收者。