This hard work has drained away my keenness.

这种艰苦的工作削弱了我的锐气。

A few weeks' hard work should damp down his keenness.

几星期的艰苦工作减弱了他的热情。

His speech fired the people with keenness for the plan.

他的发言引起了人们对这个计划的强烈兴趣。

Her keenness for sport soon yielded place to an interest in music.

她对音乐的兴趣很快替代了她对体育运动的热心。

The razor?blade is proud of its keenness when is sneers at the sun.

当剃刀刃嘲笑太阳时，它因自己的锋利而妄尊自大。