It is necessary to put up a fight against waste.
有必要开展一次反浪费斗争。
Therefore, it is necessary to put forward a new vulnerability detecting technology.
因此，有必要提出一种新的脆弱性检测技术。
Probably the best answer is our body is worn out during the day and sleep is necessary to put it back into shape.
最佳的答案应该是，一天下来，我们的身体已经疲惫了，有必要进行睡眠，以恢复状态。
So I think it is necessary for us to do something to put a check on this kind of behavior.
所以我认为我们有必要做一些制止这种行为。
Is it necessary to put my return address on?
有必要写上回邮地址吗？
It is necessary to make relevant research. In the end, some Suggestions are put forward.
最后指出开展相应研究的必要，并提出几点建议。
It is necessary to make relevant research. In the end, some Suggestions are put forward.
最后指出开展相应研究的必要，并提出几点建议。
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