The semi-monthly changes of the mud fluid are controlled by the amount of fine sediments supply.

半月周期的变化受潮流半月周期变化引起的泥沙供给量的变化控制；

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Get your colleagues to clean up and clear out the office on a monthly, quarterly or semi-annual basis.

让你的同事或每月或每季或每半年清理一次办公室。

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The monthly mean sea surface temperature for many years are subjected to a harmonic analysis so as to determine the amplitude and phase of the annual and semi-annual temperature variations.

对多年的月平均海面温度进行调和分析，从而确定了一年和半年周期温度变化的振幅和相位。

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Recently IBM, often considered a trendsetter for employee benefits, notified workers that starting next year it is changing the timing of the IBM match and automatic contribution from semi-monthly to an annual lump-sum contribution at the end of the year.

FORBES: IBM Leader in Gutting 401(k)s