如果你和别人一起学习，别害怕问问题：那既可以有助于你理解，又可以帮助那些有同样困惑却不敢问的人！
If you learn with other people, do not be afraid to ask questions: in addition to increasing your understanding, you will help all those who posed the same question, but dared not ask!
在我看来，最愚蠢的事其实是知道自己有问题，但却不敢问。
As far as I am concerned, the only true stupid thing you can do is not to be sure about something and don't dare to ask!
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