副詞 keenly:

1. in a keen and discriminating manner

1. I felt her death keenly.
   我為她的死亡而深感悲痛。
2. He keenly felt that he should do something to help.
   他強(qiáng)烈地感覺(jué)他應(yīng)當(dāng)助一臂之力。
3. He observes keenly but says very little.
   他觀察敏銳，但說(shuō)得很少。
4. He observes keenly, but says little.
   他觀察敏銳，但是很少說(shuō)話。