如果你是个医生，她说，人们会痛苦不堪地来找你，因为他们的爱情变质了，婚姻出差错了。
When you're a therapist, she says, people come to you in anguish about a love affair that's gone sour, a marriage that's gone wrong.
这里没有摩擦力；物体可以毫不费力地移动；而且它们不会出差错。
There is no friction; things move around effortlessly; and they do work.
如果你匆匆忙忙地做事，那你就要出差错。
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