压力是一种特权,它只属于那些赢得它的人。
数学的美在于它能够用一种既精确又普遍的语言来描述宇宙。
And when his audience grew bored, he would spring into the air and do a back flip with a half twist.
当他的观众感到无聊时,他会跳到空中,做一个半扭的后空翻