In the autumn of 1940 London was blitzed by an average of two hundred aircraft a night.
1940年秋,伦敦平均每晚被两百架飞机空袭。
We are still in the exploratory stages of this project, although what's noteworthy is that East Asians on average sleep about an hour and a half less each night than North Americans do.
我们仍然在这个项目的探索阶段,尽管值得注意的是,东亚人平均每晚比北美人少睡一个半小时。
An average Marine carries about 9lbs of disposable batteries in their kit to power equipment such as night vision goggles and radios.
平均每个陆战队员所携带的装备中有9磅的一次性电池,用于为夜视镜和无线电台这些设备供电。
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