adj.备有龙骨的;
v.翻身,倾覆( keel的过去式和过去分词 );
例句:
The intense heat keeled her over.
酷热使她晕倒了.
The boat keeled over in the strong winds.
船在大风中翻了.
The small boat keeled over in the storm.
小船在风暴中倾覆了.