Listening to soft music for45 minutes before bedtime can slow breathing and heart rates, helping you drift off faster and slumber soundly according to a Case Western Reserve University study.

凯斯西储大学的一份研究报告表明：睡觉前，听一听柔和的催眠曲45分钟，有利于放慢心率和呼吸频率，这样有助于快点入睡，而且也睡得香甜。

The continental drift theory and sea-floor spreading theory.

大陆漂移和海底扩张。

These thoughts made him much easier in his mind, and now the room smelt less fusty. He began to drift off to sleep.

这样一想，他心中舒服了许多，闻了闻屋中，也不像先前那么臭了，慢慢的入了梦。

As they drift away from the polar region, icebergs sometimes move mysteriously in a direction opposite to the wind, pulled by subsurface currents.

当漂离极地地区时，冰山有时会在底层洋流的推动下颇为神秘地逆风移动。

He finally drifted in half an hour after everyone else.

他终于飘然而至，比别人迟到了半个钟头。

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