As the night wore on, people began to close their eyes, but the seats were so uncomfortable that only a very heavy sleeper could manage to get any rest.

夜渐渐深了，人们开始闭上眼睛，但是座位太不舒服了，只有睡得很沉的人才能设法获得休息。

I'm such a heavy sleeper that the explosion didn't wake me.

我睡得很死，连爆炸声都没有把我吵醒。

Tom is such a heavy sleeper that the explosion didn't wake him.

汤姆睡觉很沉，连爆炸都不会把他弄醒！

Mrs Fairfax is a heavy sleeper, like most old people, and didn't hear anything.

费尔法斯太太像大多数老年人一样，睡得很沉，没听见什么。