每一首诗都是一场小革命。

Three things are necessary for the salvation of man: to know what he ought to believe； to know what he ought to desire； and to know what he ought to do.

You just once young but may be immature indefinitely.

学习阅读涉及注意力网络的发展，使儿童能够专注于字母和单词，同时忽略干扰。