地壳在某种程度上是过去时间的博物馆。
The strongest weapon you have is your mind. Train it well.
"I am not a political writer. I am a writer who writes about politics."
I am happy and proud of what I have done, but not completely satisfied.
我不知道需要多长时间才能取得辉煌,我只是想尽我所能去成为最出色的篮球运动员。
密码学是关于在存在对手的情况下进行通信的。