keenly

副词 keenly:

1. in a keen and discriminating manner

1. I felt her death keenly.
   我为她的死亡而深感悲痛。
2. He keenly felt that he should do something to help.
   他强烈地感觉他应当助一臂之力。
3. He observes keenly but says very little.
   他观察敏锐，但说得很少。
4. He observes keenly, but says little.
   他观察敏锐，但是很少说话。