Anyone who has worked for any length of time has observed situations where a promotion didn't work out and the person asked for the old job back.

任何工作过不论多长时间的人想要晋升却没能奏效时，可以返回原来的工作岗位。

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We have not found any changes of observed values of the angular diameter with time in this period.

在这一观测周期中，我们没有发现角直径随时间变化的现象。

youdao

No group differences were observed at any time point for the conduct or cognitive subscales of the CWSS.

不论任何时间点，两组的CWSS品行或认知次量表都没有差异。

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But beyond the contrasting form factors and use cases there is a striking fact observed by anyone who really studies mobile devices: people use all devices for everything, everywhere at any time of day.

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Of course, mistakes will creep through from time to time in the best-run organisations, and there is no suggestion that any of the errors observed was a deliberate fraud.

ECONOMIST: Scientific publishing