n.礁，暗礁；[矿]矿脉；[航]缩帆部，榫帆部；vt.收帆，缩帆； 变形： 复数：reefs过去式：reefed过去分词：reefed现在分词：reefing第三人称单数：reefs 双语释义：n.(名词)[C]礁，暗礁 a line of sharp rocks,often made of coral,or a bank of sand on or near the surface of the sea英英释义： reef[ ri:f ]n.a submerged ridge of rock or co