扔下的英文：
flap down
fling away
throw down

参考例句：

"Drop that gun! If not, you'll be sorry."
把枪扔下!否则你会后悔的。

She dropped the bag down and he caught it.
她把包扔下，他接住了。

Throw(sb/sth)with force(as if)from a great height
(似)自极高处将(某人[某物])猛然扔下

Drop sth or put sth down heavily or with a plonking sound
扔下某物;重重放下某物(并发出砰的声音)

Torgler was a deserter. He chucked down his rifle and ran from the field of battle
托格勒是个逃兵。他扔下枪从战场上跑掉了。

He drop a pebble from the bridge and wait for the plop.
他从桥上扔下一颗卵石，然後等著听那扑通的一声。

We spent over an hour clearing up all the waste paper and that which the trippers has left behind.
我们花了一个多小时打扫游客扔下的所有废纸和其他东西。

He dropped a pebble from the bridge and waited for the plop .
他从桥上扔下一颗卵石， 然后等着听那扑通的一声。

As he ran, Feliks dropped the heat and tore off his coat.
弗利克斯边跑边扔下枪，脱下上衣。

To spoil his song with, and which, snatched in haste,;Is laid down at the first ill-sounding note.
一发出沙沙的音，就给恼恨地;扔下。我这么说，并不曾亏待

flap是什么意思：
n. 扁平物；副翼；拍打
v. 飘动；拍动；激动，不安

get into a flap
激动起来

minimum flap retraction speed
最低襟翼收起速度

camber changing flap
改变机翼弯度的襟翼

down是什么意思：
prep. 在…下，沿着
v. 下降，打倒
n. 潦倒；羽绒；丘陵

Down with hegemonism!
打倒霸权主义！

The sun is down.
太阳下山了。

Close down autos and you close down steel and rubber.
关掉了汽车工业你也就关掉了钢铁工业和橡胶工业。

fling是什么意思：
n. 投，掷，抛；一时的放纵
v. 扔，掷，抛；猛扑，猛冲；投身于

To cast,fling,or hurl something.
投、扔或掷某物

The iron flings align themselves in the direction of the magnetic field.
铁屑按磁场的方向排列。

At least I can say that it wasn't fling.
至少我可以说那不是一时的放纵。