新事物代替旧事物。
如果我们记住这一点将会有所帮助，那就是生命是一个阶段接着另一个阶段，这个困难时期将不可避免地被不同的新事物所代替。
It helps if we remember that life is one phase after another and that this difficult time will inevitably give way to something new and different.
旧事物终将被新事物所代替，这是必然的。
It's in the very nature of things that the old eventually makes way for the new.
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