noun🔗Share暗礁，礁石。 A chain or range of rocks, sand, or coral lying at or near the surface of the water."The divers carefully navigated around the coral reef. "潜水员们小心地绕开了那片珊瑚礁。geologyoceanenvironmentnaturegeographyChat with AIVocabulary GamePractice Reading
noun🔗Share矿脉，矿床 A large vein of auriferous quartz; hence, any body of rock yielding valuable ore."The gold miners found a rich reef, promising a large harvest of valuable ore. "金矿工们发现了一处富矿矿脉，预示着将会收获大量的贵重矿石。geologymaterialmineralChat with AIVocabulary GamePractice Reading
noun🔗Share缩帆部，缩帆。 A portion of a sail rolled and tied down to lessen the area exposed in a high wind."To reduce the strain on the sailboat's rigging during the strong winds, the sailor reefed the mainsail. "为了减轻强风对帆船索具的压力，水手将主帆缩帆了。nauticalsailingChat with AIVocabulary GamePractice Reading
noun🔗Share平结 A reef knot."To tie the shoelaces, she used a reef knot. "为了系鞋带，她打了一个平结。nauticalsailingChat with AIVocabulary GamePractice Reading
verb🔗Share收帆，缩帆。 To take in part of a sail in order to adapt the size of the sail to the force of the wind."To make sure the sailboat didn't capsize, the sailor reeled in part of the sail, reefing it. "为了防止帆船倾覆，水手收回了一部分帆，也就是缩帆。nauticalsailingChat with AIVocabulary GamePractice Reading
verb🔗Share收缰，勒住。 To pull or yank strongly, especially in relation to horse riding."The horse rider reeled in the reins, reefing them tight to stop the runaway horse. "骑手猛地收紧缰绳，用力勒住，想阻止这匹脱缰的马。actionsportanimalChat with AIVocabulary GamePractice Reading
verb🔗Share缩帆, 收帆. (of paddles) To move the floats of a paddle wheel toward its center so that they will not dip so deeply."Reef the paddles."把桨叶收起来。nauticalsailingvehiclemachinetechnologyChat with AIVocabulary GamePractice Reading
noun🔗Share疹子，皮疹 The itch; any eruptive skin disorder."My son had a bad skin reef on his arm, so we took him to the doctor. "我儿子胳膊上起了很严重的皮疹，所以我们带他去看医生了。medicinediseasebodysensationChat with AIVocabulary GamePractice Reading
noun🔗Share头皮屑, 头屑。 Dandruff."My little sister has a bad case of reef; she needs to use a medicated shampoo. "我妹妹的头皮屑很严重，她需要用药用洗发水。appearancebodymedicineChat with AIVocabulary GamePractice Reading
adjective🔗Share癞皮的，疥癣的 Scabby; scurvy."The old man's skin was reefy and cracked from years of sun exposure. "这老人的皮肤因为常年暴露在阳光下，变得癞皮而且干裂。appearanceconditionChat with AIVocabulary GamePractice Reading
