reef

• The ship was wrecked on the hidden reef .
  那艘船撞到暗礁沉没了。
• The captain ordered to reef the sails for docking .
  船长下令收帆以靠港。
• An atoll is a circular reef surrounding a lagoon .
  环礁是环绕着一个泻湖的环形礁石。
• Older reefs become cemented up .
  老礁块胶结起来。
• The pilot guided us through the dangerous reefs .
  这位引航员引导我们通过了危险的暗礁区。
• Alternatively, reefs may extend linearly across basins .
  此外，暗礁可横穿盆地呈带状延伸。
• The motorboat cut across swift currents and skirted dangerous reefs .
  汽艇穿过激流，绕过险滩。
• The ship struck on a reef .
  船触礁了。
• A coral reef may build up to the surface of the tropical ocean .
  在热带海洋，珊瑚礁可一直筑到海面。
• The main chromitite seam and the merensky reef do not outcrop well .
  主铬铁岩矿层及麦仑斯基矿层出露不好。