| reef n. 暗礁, 收帆v. 收(帆) 英英解释: 名词reef: 1. a submerged ridge of rock or coral near the surface of the water 2. a rocky region in the southern Transvaal in northeastern South Africa; contains rich gold deposits and coal and manganese 同义词：Witwatersrand, Rand 动词reef: 1. lower and bring partially inboard 2. roll up (a portion of a sail) in order to reduce its area 3. reduce (a sail) by taking in a reef |