1、eternal
永久的;永恒的;永遠的
Whoever believes in Him shall have eternal life.
所有相信上帝的人都會獲得永生。
the quest for eternal youth.
對永葆青春的追求
（真理、價值、問題等）永恒的，不朽的
the eternal truths of the Indian subcontinent.
印度次大陸的永恒真理
the eternal question.
永恒的問題
無休止的;沒完沒了的
In the background was that eternal hum.
背景音是沒完沒了的嗡嗡聲。
2、drop off
打瞌睡;睡著
I must have dropped off to sleep.
我肯定是睡著了。
Just as I was dropping off, a strange thought crossed my mind.
就在我打瞌睡的時候,一個奇怪的念頭閃過我的腦海。
減退;減少
Sales to the British forces are expected to drop off.
預計對英國軍隊的銷售量會減少。
The daily toll of casualties has dropped off sharply.
每日傷亡人數已經大大減少。