| 1. | The ship was wrecked on the hidden reef .
那艘船撞到暗礁沉没了。 |
| 2. | The captain ordered to reef the sails for docking .
船长下令收帆以靠港。 |
| 3. | An atoll is a circular reef surrounding a lagoon .
环礁是环绕着一个泻湖的环形礁石。 |
| 4. | Older reefs become cemented up .
老礁块胶结起来。 |
| 5. | 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。 |
| 6. | Alternatively, reefs may extend linearly across basins .
此外，暗礁可横穿盆地呈带状延伸。 |
| 7. | The motorboat cut across swift currents and skirted dangerous reefs .
汽艇穿过激流，绕过险滩。 |
| 8. | The ship struck on a reef .
船触礁了。 |
| 9. | 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。 |
| 10. | 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。 |
