| 1. | The anchor did not stay in its place on the sea bottom .
锚不停在海底的位置。 |
| 2. | In a few minutes, we are hovering motionless over the bottom of the sea .
几分钟以后，我们一动不动地浮在海底上面。 |
| 3. | The u-boat packs were kept underwater and harried continually .
成群结队的德国潜艇被迫潜伏在海底，并且不断地受到困扰。 |
| 4. | Scientists are fairly certain about the effects of hot spots beneath the ocean floor .
科学家们确信在海底下方的热点作用。 |
| 5. | Was it the abbot's bell, ringing for him far down at the bottom of the sea ?
不正是沉在海底深处的修道院长的铃儿为他而发出的响声吗？ |
| 6. | He fashioned in the depths of the sea a throne of cunning device, which he sent to his mother .
他在海底制作了一个装有精巧机关的御座，呈送给他的母后。 |
| 7. | Calcareous sediments accumulated on a sea floor and eventually were compacted and cemented to form limestone .
钙质沉积物堆积在海底，最后压紧并胶结形成石灰岩。 |
| 8. | Shells and bones decay and disappear when left on the bottom of the sea, where sediment is not accumulating .
介壳与骨骼若落在海底，而不为沉淀物所掩盖，也便腐烂而消灭。 |
| 9. | They have also designed small chambers which the alvin crew can place over animals on the ocean floor .
他们并且设计了可由“阿尔文号”船员放在海底动物上方的一些小室（chamber）。 |
| 10. | I think cities will someday be built under the sea
我想有一天城市会建在海底。 |
