reef
复数形式
reefs
1
礁, 珊瑚礁
a ridge of rock or a line of sand near the surface of a body of water
2
缩帆带, 帆的褶皱
one of several strips across a sail that can be taken in or rolled up to lessen the area of the sail that is exposed to the wind
3
礁, 珊瑚礁
a rocky region in the southern Transvaal in northeastern South Africa; contains rich gold deposits and coal and manganese
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