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1·She stressed the need for constant vigilance.

她强调必须时常保持警惕。《牛津词典》

2·Constant vigilance is necessary in order to avoid accidents.

为了避免意外事故，必须经常保持警惕。《新英汉大辞典》

3·It seems to me they still have some fight left in them. We shouldn't relax our vigilance.

他们余勇可贾，我们不能放松警惕。《新英汉大辞典》

4·The Committee of Vigilance promptly arrested the Knapp brothers and sent them to the Salem Gaol, their cells not far from those occupied by the Crowninshields.

警戒委员会迅速逮捕了克纳普兄弟，把他们也扔进了萨勒姆监狱，囚禁这二人的牢房与克劳宁希尔德兄弟的牢房相距不远。

5·The organism is more awake, more vigilant; this increased vigilance results in the apprehension of ever more subtle signals as the organism becomes more sensitive to its surroundings.

有机体更清醒，更警觉；随着有机体对周围环境变得更加敏感，这种提高的警惕性导致对更细微信号的理解。

6·Constant vigilance is needed to combat this evil.

同这种邪恶作斗争需要时刻保持警惕。《柯林斯英汉双解大词典》

7·Don't slacken your vigilance.

不要麻痹大意。《新英汉大辞典》

8·Don't you know the crushed worm will turn? Why are you so lacking in vigilance?

你不知道困兽犹斗吗？为什么这样麻痹大意？《新英汉大辞典》

9·Our vigilance never languished.

我们的警惕性从来没有放松过。

10·But vigilance is needed.

但是警惕是需要的。