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Natural variability has increased the difficulty of calculating the spill 's effects .

自然可变性也增加了计算溢油事故影响的难度。

But this argument belies the extreme variability that is present in human behavior .

但是这个理由不足以证明在人类行为中表现出的极端可变性。

When a person is stressed their heart rate becomes consistent and variability is minimized .

当人有压力时他们的心率变得前后一致，可变性降到了最低。

One of the manifestations of poorly controlled blood pressure is a high degree of variability , he says .

佩恩这样说，他还表示，血压控制差的一个表现就是血压的高度可变性。

A better approach would make the frequency stochastic buses arrive every 10 minutes on average , but with wide variability .

一个更好的办法是把到站频率设为随机平均每十分钟有一辆公共汽车到站，但到站时间有很大的可变性。