In order to spin off the Moon, Earth would have had to rotate so fast that a day would have lasted less than three hours.
为了脱离月球，地球必须旋转得如此之快，以至于一天持续的时间少于三个小时。
Every day for three hours he rattled on the roof of the castle till he broke most of the slates, and then he ran round and round the garden as fast as he could go.
每天他都要在城堡的屋顶连续不断地敲打三个小时，直到大部分瓦片被砸破为止，然后他又以最快的速度绕着花园奔跑。
The cleansing effects of a 30-minute sole bath equal that of a three-day fast.
这就是盐浴适合干性皮肤的原因。一次30分钟盐浴的清洁效果等同于三天匆匆洗浴的效果。
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