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as and when
01
根据需要, 视需要而定
used to express the idea of something happening or being done at the appropriate or necessary times
Example
We will hire new employees as and when the need arises.
我们将根据需要,视需要而定招聘新员工。
The system automatically updates itself as and when new information becomes available.
系统会根据需要,视需要而定自动更新自己，随时获取新信息。
