他认为其中的奥妙在于这种削弱是与每个突触原有的强度成比例的。 因此当人苏醒时每个突触的相对强度是不变的，但所有的突触强度比之睡前都减弱了。
others, but all synapses are weaker than they were when he went to sleep.
持续不断的、低强度压力会让我们觉得筋疲力尽，也会削弱我们的免疫系统，甚至会导致抑郁症等疾病。
A constant low-level stress can leave us feeling exhausted, weaken our immune systems and cause other illnesses such as depression.
另一方面又削弱了井壁岩石的力学强度。
On the other hand, it alleviates the mechanic strength of the sidewall rock.
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