1. He is a keen and resourceful politician.
    他是个头脑敏锐又足智多谋的政治家。

2. He talked of the old college days when he and Gaston had been best friends, of the days of keen ambitions and large intentions.
    谈他在大学里与加斯顿是好朋友，谈那时曾雄心勃勃，志向高远。

3. Dogs have a keen sense of smell.
    狗的嗅觉很灵敏.

4. A third, a keen viewer of TV theatre, recognized a phrase in the poem which had been used as the title of a recent play.
    第三个学生是电视剧的热心观众，他记起了最近有一出剧就是用这首诗中的一句话作为剧名。

5. She is keen on algebra.
    她对代数极感兴趣。

6. Some really keen enthusiasts go so far as to build their own record players and radio transmitters.
    有些真正的狂热家甚至自己制造电唱机和无线电发射机。

7. Mrs. Miller is very keen on art.
    米勒太太对艺术很感兴趣。

8. Competition between bidders for this valuable painting has been keen.
    拍卖时各出价人对这幅名画竞争很激烈.

9. But a keen appetite for pleasure even in its simplest and most modest forms.
    而且还带来了寻找乐趣的强烈欲望，那怕是最简单的、最低等的乐趣。

10. Building garages and making furniture. Some really keen enthusiasts go so far as to build their own computers.
    有些热衷于自己动手的人甚至自己组装电脑。