Normally, internal rhythms are kept in step by regular environmental cycles.

正常情况下，体内的节奏与规律的环境周期保持一致。

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Productivity and wage increases have not kept in step.

生产率和工资没有同步上升。

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I kept the pictures to myself and accepted this as one more step in supporting his increasing autonomy.

我把这些照片留给自己，并把这看作是支持他越来越自主的又一步。

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In recent years, Ziglar Corp. has kept in step with the advances in technology by morphing into an all-encompassing performance enhancement consultancy, featuring a half-dozen speakers and productivity training for corporate employees.

FORBES: Magazine Article

Again, the two measures kept closely in step with each other, with the cloud cover swinging from 65% when cosmic rays were weakest, to 68% when they peaked.

ECONOMIST: Global warming

But for the process to result in a working battery, all five layers must stick together and work in synchrony, and the tricky step was finding a separator material that kept the whole stack in one piece.

BBC: 'Paint-on' batteries demonstrated