sense of humor 幽默感
He is distinguished for his sense of humor.
他以其幽默感著称。
Your brother has a good sense of humor.
你兄弟很有幽默感。

in chief of 掌管
The power of the commander-in-chief was absolute.
总司令拥有全权。
For many years she was editor-in-chief of the Moscow News, which she founded.
多年来，她担任由她创办的莫斯科新闻报主编。

crucial 关键性的，极其显要的； 决定性的
The battle had reached a crucial juncture.
战斗已到了关键时刻。
Money will be crucial to the accomplishment of our objectives.
要实现我们的目标，钱是至关重要的。
Speed is crucial in military affairs.
兵贵神速。