在数学中，提出问题的艺术必须比解决问题更有价值。

我们联邦中每个家庭的感激之情都献给那些为我们的国家服务而战斗和牺牲的勇敢的人们。

Collaboration is the key to solving complex problems.

A wise man said: before you speak， let your words pass through three gates. At the first gate， ask yourself， "Is it true？" At the second gate， ask "Is it necessary？" At the third gate， ask， "Is it kind？"

市场总是在寻找下一个大故事。