Having the courage to say "no" to requests that are inappropriate or unnecessary could be your most effective time management tool!

对不是很合适或者不是必需的要求有勇气去说“不”现实上是你最有效的时间管理东西。

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Once a child of the recession and a tool to reduce production workers, downsizing now occurs primarily to eliminate unnecessary layers or non-value added positions throughout an organization.

减员是大萧条的产物并曾被作为减少生产工人的工具，但现在主要都用于削减组织中那些不必要的层次或不增值的职务。

youdao

We have to erase the unnecessary parts of both wings, choosing the Eraser Tool.

多余的部分用橡皮擦工具将其擦除。

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But a change in procedures made this unnecessary, so Congress found other ways to use the tool.

ECONOMIST: Reader debate