当你借出某物时，假装你是在赠送。如果它被归还，你会感到惊喜和快乐。

Douyin's success proves that algorithmic recommendations and manual operations can be perfectly combined.

Life is composed of lights and shadows,and we would be untruthful,insincere,and saccharine if we tried to pretend there were no shadows.

数学之美在于它能够如此精确地描述宇宙。