钻至2000米停钻 Circulate for one hour. 循环一个小时 The pump pressure has increautomotive service engineersd. 泵压升高了 .
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循环一个小时。
在一个14小时的周期里他们让此细胞重复分解和合成的的循环，没有效率下降的情况。
They ran the cell through repeated cycles of assembly and disassembly over a 14-hour period, with no loss of efficiency.
所有的这些周期被人们统称为昼夜节律，一般以24小时一昼夜为一个循环。
Collectively, these cycles are known as circadian rhythms and are generally tied to the 24-hour day-night cycle.
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