1. Difficulties keened their contradictions. 困难使他们之间的矛盾更加尖锐化了。
2. A good lawyer needs a keen brain. 一位好律师需要敏锐的头脑。
3. How keen are you to play for Spain? 是不是很想为西班牙国家队踢球?
英英解释
n.
1. a funeral lament sung with loud wailing
2. express grief verbally
3. having or demonstrating ability to recognize or draw fine distinctions
4. intense or sharp
5. very good
6. as physically painful as if caused by a sharp instrument
7. having a sharp cutting edge or point