n.(船的)龙骨;
vt.& vi.翻身,倾覆;
例句:
Why, he'd keel over just with two draws.
嘿, 让他抽上一两口他就会一头昏倒.
Several of them keeled over in the heat.
他们中有好几个人在酷暑中倒下。
The workers are laying a keel of the ship.
工人正在给那艘船安龙骨.