1、eternal
永久的;永恒的;永远的
Whoever believes in Him shall have eternal life.
所有相信上帝的人都会获得永生。
the quest for eternal youth.
对永葆青春的追求
（真理、价值、问题等）永恒的，不朽的
the eternal truths of the Indian subcontinent.
印度次大陆的永恒真理
the eternal question.
永恒的问题
无休止的;没完没了的
In the background was that eternal hum.
背景音是没完没了的嗡嗡声。
2、drop off
打瞌睡;睡着
I must have dropped off to sleep.
我肯定是睡着了。
Just as I was dropping off, a strange thought crossed my mind.
就在我打瞌睡的时候,一个奇怪的念头闪过我的脑海。
减退;减少
Sales to the British forces are expected to drop off.
预计对英国军队的销售量会减少。
The daily toll of casualties has dropped off sharply.
每日伤亡人数已经大大减少。