fall off

基本解釋

Some reckon oil revenues will fall off before 2020.
有人估計(jì)，石油收入將在2020年之前減少。
I have this theory that, to us the world is a flat thing we stand on, but to birds it is a cliff they cling to, a huge ball and they cling to the side and then fall off and fly and glide.
我有一種想法，就是對(duì)我們來(lái)說(shuō)世界是一個(gè)我們所站立的平坦的東西，而對(duì)鳥來(lái)說(shuō)是一個(gè)它們所依靠的峭壁，一個(gè)巨大的球，它們依靠在邊上，然後離開(kāi)、飛翔、滑行。
But they need to be providing some support or they will just fall off your shoulders.
但是你需要肩帶提供一些支撐否則它們就會(huì)從肩膀上滑下來(lái)。

The glassblower must turn the pipe constantly so that the thick liquid glass does not fall off the end.
People are always losing a wooden leg and having parts of their limbs fall off.
人們不是丟失了一條木腿,就是缺胳膊少腿的。
耶魯公開(kāi)課 - 1945年後的美國(guó)小說(shuō)課程節(jié)選
Eventually you develop a scab, as it healed, and then it would--and then the scab would fall off, and you'd be left with a scar.
瘉郃之後會(huì)變成一個(gè)疤,這個(gè)疤後來(lái)會(huì)脫落,你身上會(huì)畱下疤痕
耶魯公開(kāi)課 - 生物毉學(xué)工程探索課程節(jié)選

If I can fall off one cliff, I should be able to fall off each cliff.
FORBES: [Spoilers spoilers everywhere...]

If something falls off, it separates from the thing to which it was attached and moves toward the ground.
If the degree, amount, or size of something falls off, it decreases.