顶下的英文：
jack down

参考例句：

A passageway under an arch.
拱道拱顶下的通道

We slept in hammocks slung beneath the roof.
我们睡在悬在房顶下的吊床上。

"He had such a great deal of work to do, but somehow he managed."
"他手头的工作实在太多,但他还是顶下来了。"

Before the train had come to a standstill under the arched roof of the Bonneville depot, it was all but taken by assault
列车还没有在波恩维尔车站那拱形屋顶下停下来，人们就简直一窝峰似的扑上车去。

one of those attics whose extremity forms an angle with the floor, and knocks you on the head every instant
有许多房顶下的屋子，顶和地板相交成斜角，并且时时会撞你的头，她的房间便是那样的一间。

jack是什么意思：
n. 千斤顶；插座；J牌；男人
v. 用千斤顶顶起，抬起；提高，增加；提醒

Every Jack has his Jill
有情人终成眷属

Jack of all trades is of no trade
万事皆通,一无所长

Jack surrendered himself to pleasure.
杰克沉溺于欢乐之中。

Jack is a full back of the team.
杰克是球队的后卫队员。

Jack was dubbed a hero.
杰克被授予英雄称号。

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。

nail down; nail in;hold by
钉住;使人遵守诺言

break down resistance
粉碎反抗，制服反抗