However, after the experiment described above the difference in time between the two clocks was less than a billionth of a second, which is why very accurate clocks were needed.
但是经过上述实验后，两个钟表的时间差距不到十亿分之一秒，所以需要用两个非常精准的钟表。
The difference in time scale between the few hours his world has evolved and the billions of years wild nature has evolved is only part of the problem.
他的世界几个小时的进化，蛮荒大自然的数十亿年的进化，其时间尺度上的差别也只是问题的一部分。
There was no significant difference in complication rate and hospital cost in two groups(P>0.05). But there was significant difference in time of operation and hospitalization(P<0.05).
两组结石残留率、近期并发症发生率、住院费用等方面差异无显著性（P>0.05），而在手术时间、住院时间等方面差异有显著性（P<0.05）。
There was no statistically significant difference between the LMA and ETT with the exception of a clinically insignificant difference in time to complete insertion of the device favouring the ETT.
喉头罩和气管插管之间没有统计学上显著的差异，除了插管完成的时间稍快一些，但并无明显差异。
There was no statistically significant difference between the LMA and ETT with the exception of a clinically insignificant difference in time to complete insertion of the device favouring the ETT.
喉头罩和气管插管之间没有统计学上显著的差异，除了插管完成的时间稍快一些，但并无明显差异。
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