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1·Working-class families feel an even keener sense of disappointment.

工人阶级家庭的失望感更加强烈。

2·They don't realize that the competition is getting keener and the required standards of work get higher and that their children may not be prepared for the change.

他们没有意识到竞争越来越激烈，所要求的工作标准越来越高，而他们的孩子可能还没有准备好迎接变化。

3·Smell is keener in dogs than in humans.

狗的嗅觉比人的嗅觉灵敏。《新英汉大辞典》

4·The leaders of the Maine towns are keener.

缅因州的领导者更为热心。

5·Mr Obama plainly has a keener sense than Mr Bush did of American limits.

在对美国局限性的认识方面，奥巴马先生显然要比布什先生敏锐。

6·The fact that animals have keener senses than humans is well-documented.

动物不见得就比人类更有预测地震海啸的天赋，它们只是感官更加敏锐而已。

7·Salmonella doubles every 20 minutes under ideal conditions, Keener said.

基纳说，在理想环境下，沙门氏菌每20分钟复制。

8·But there is subtle contact that you may need an even keener eye to catch.

但某些细微的接触，需要你擦亮眼睛认真观察。

9·The best educated seem keener to go almost anywhere but the European Union.

受过最高教育的人期待着去任何欧洲国家以外的地方去谋求工作。

10·Salmonella tends to pool in the membrane around an egg's yolk, Keener added.

沙门氏菌在蛋黄膜周围聚集。