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倒置,始终倒置:将情况或问题颠倒过来。反向观察它。
To live is to leave traces, and poetry is the most enduring of them all.
I've learned that growth comes from pain and struggle.
The fundamental point in fabricating a chain reacting machine is of course to see to it that each fission produces a certain number of neutrons and some of these neutrons will again produce fission.
梦想是人生的动力,没有梦想就没有方向。