jam
单词辨析：
指堵住通道，使人或物无法通过，语气较强。
A big stone is blocking the road.
一块大石头挡在路上。
Something blocked the flow of water through the pipe.
有什么东西堵塞了管道里的水流。
指将某处塞满东西造成堵塞；也可以指使人呼吸困难。
A pile of garbage choked the pipe.
一大坨垃圾堵塞了管道。
The gutter was choked with debris.
排水道被垃圾堵住了。
That pungent perfume almost choked me.
那刺鼻的香味差点儿让我喘不过气来。
They choked on the smoke from the chimney.
他们被烟囱冒出的烟呛得透不过气来。
指堵塞道路、孔洞等。
Every summer, there are cars clogging the road to the beautiful beach.
每年夏天都会有汽车把那条通往迷人海滩的道路堵得水泄不通。
The water pipe was clogged with debris.
水管子被废弃物堵了。
主要指阻挡住涌流物，如河水、眼泪等，常与副词 up，back 连用。
dam (up) the river
在河上建坝
It is ridiculous for him to try to dam the flow of history.
他试图阻挡历史进程的做法是荒谬的。
That poor girl dammed back her tears.
那个可怜的女孩强忍住眼泪。
指因人、车辆等过多而使某处无法通行。
The strikers jammed the streets so no car could move.
罢工者把街道堵死了，没有汽车可以通行。
Children jammed the entrance to the fair.
孩子们把游乐场的入口处挤得水泄不通。
相关例句：
The bread and butter is thickly spread with strawberry jam.
在涂有奶油的面包上厚厚地抹上草莓酱。
They jammed into buses provided by the Red Cross and headed for safety.
他们挤上红十字会派来的巴士前往安全的地方。
'Sorry Edward,' I said, splattering the cloth with jam.
“对不起，爱德华，”我说道，因为我把果酱洒在了桌布上。
Hundreds of people jammed the boardwalk to watch
数百人挤在木板人行道上观看。
My gran's given us some apple jam.
我奶奶送给我们一些苹果酱。
The second time he fired his gun jammed
他开第二枪时枪卡壳了。