adj.备有龙骨的
v.翻身,倾覆( keel的过去式和过去分词 )
He then keeled over and fell flat on his back.
然后,他便仰天倒下了。
The boat keeled over in the strong winds.
船在大风中翻了.
The intense heat keeled him over.
酷热使他晕倒了.