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1·That's a good description, Mrs. Drummond. You're very observant.

描述得很好，德拉蒙德太太。你很善于观察。《柯林斯英汉双解大词典》

2·The husband is not usually so observant.

丈夫通常不那么善于观察。

3·Its somewhat ambitious title was The Book of Life and it attempted to show how much an observant man might learn by an accurate and systematic examination of all that came in his way.

这本书有点野心勃勃的书名是《生命之书》，它试图表明，一个善于观察的人，通过对他遇到的一切事物进行准确而系统的考察，可以学到多少东西。

4·Its somewhat ambitious title was The Book of Life, and it attempted to show how much an observant man might learn by an accurate and systematic examination of all that came in his way.

《生命之书》这个书名或许有些野心勃勃，这本书试图说明，一个善于观察的人，通过所遇之事进行准确而系统的考察，可以学到多少东西。

5·Observant walkers may see red deer along this stretch of the road.

观察敏锐的步行者可能在这一路段看到赤鹿。《牛津词典》

6·Failing to be observant while walking or driving can be life threatening.

走路或开车时不注意观察可能会危及生命。

7·You are an observant man.

你是个有眼力的人。

8·'Tis treacle,' said an observant matron.

“那是糖浆，”一个目光敏锐的妇女说。

9·Learn to be suspicious, as well as observant.

学习表示怀疑，以及细心的观察。

10·Whatever you do, be observant of what is going on around you.

无论你在做什么，对于你周围所发生的一切要善于观察。