那样做没用。
Doing incrementation, pretty useless; right?
做增量运算，相当无用的，对不？
It is useless/no use waiting here doing nothing.
无所事事地等待是没有用的。
There's a big difference between knowing and doing. Knowledge is useless without action.
知道和做之间有很大区别。知识是没有用的，如果没有行动的话。
You'd better believe it. He has me doing so many useless tasks.
你最好相信我。他老是叫我做很多毫无价值的事情。
You'd better believe it. He has me doing so many useless takes.
你最好相信我。他老是叫我做很多毫无价值的事情。
You'd better believe it. He has me doing so many useless takes.
你最好相信我。他老是叫我做很多毫无价值的事情。
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