任何忠实尽责地履行职责的总统都不会有闲暇时间。
No president who performs his duties faithfully and conscientiously can have any leisure.
The beauty of mathematics lies in its ability to connect seemingly unrelated ideas.
To be a father is to be condemned to watch your child grow up.
对抗病毒是一场持续的战斗，科学必须始终领先一步。
东山再起总比挫折更强大。