Don't act like you know it all.
不要装得好象你懂得一切。
Always act like you know what you're doing, even if you don't.
一定要表现的知道自己在干什么，就算你其实不知道。
If you're in a situation where you're not sure what to do, act like you know what to do.
如果你所处的状况是你不确定要做什么，那么你可以做自己知道要做的事情。
Don't act like a know-all. You listen to your mother.
不要那样自以为是。听你妈妈的话。
Don't act like you don't know it.
不要装得与你无关一样。
Your know it is not sound, you would never act like that yourself!
你知道，这听起来未必可靠，你自己就不肯这样做！
Your know it is not sound, you would never act like that yourself!
你知道，这听起来未必可靠，你自己就不肯这样做！
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