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- He is a keen observer and has a good track record as an employee of Eco-Jet. 作为一名生态型喷气式飞机公司员工，他是一个精明的观察员，有良好的工作记录。
- She is a keen observer, and never flinched from pointing out the faults. 希望这把“最真实的声音”，能够抛砖引玉，引发一轮热烈的讨论。
- Here is the source where the artist finds its inspiration and has proofed himself a keen observer. 这儿有素材，能够唤起艺术家们的创作灵感，促使他们成为一名敏锐的观察者。
- A keen observer of English customs relates that, being in one of the rooms of the Bank one day, he had the curiosity to examine a gold ingot weighing some seven or eight pounds. 位对英国习惯十分熟悉的观察家，甚至这样说：有一天，在英国国家银行的一个大厅里，他好奇地挨近前去，想把一块七八斤重的金块看个究竟。
- She is a keen observer of even the cruelest workaday details, as when Nini is hungry enough to eat the flour paste being used to put up posters about Gu Shan’s imminent execution. 她对日常生活中的残酷的细节观察入微，如妮妮饿到竟然去吃浆糊,而她所吃的浆糊正是要用来张贴古珊不日即进行的处决的通告的。
- The blind have a keen sense of touch. 盲人有敏锐的触觉。
- Not both the artists have a keen eye for beauty. 这两位艺术家并非都有审美的眼光。
- He handed me a knife with a keen edge. 他递给我一把锋利的刀。
- Dogs have a keen sense of smell. 狗的嗅觉很灵敏。
- She is a student of keen observation. 她是一个观察力敏锐的学生。
- Though advanced in years, he has a keen sense of hearing. 他虽然上了年纪，但听觉十分灵敏。
- Peter is a keen footballer in his spare time. 彼得在业余时间里很喜欢踢足球。
- She showed a keen interest in the new research. 她对于新的研究表现出浓厚的兴趣。
- An umpire must be an entirely disinterested but keen observer. 裁判必须是个完全公正又敏锐的观察者。
- He is a keen and resourceful politician. 他是个头脑敏锐又足智多谋的政治家。
- In a few moments, a man stood in his presence, who, with a keenly observant look at him, addressed him by his name. 不一会儿，一个人已来到他面前。 那人目光犀利地打量了他一会儿，便叫出了他的名字。
- He has a keen political foresight. 他很有政治眼光。
- He has a keen appreciation of music. 他对音乐有敏锐的欣赏力。
- He has a keen impatience with the dull. 他对于迟钝的人极不耐烦。
- He has a keen eye for the secret of the thieves. 他善于洞察小偷的隐秘。
