| 1. | Maybe he can't screen out bottom return .
说不定他无法鉴别水底的反射信号。 |
| 2. | However often you mix it up in the water , the mud will gravitate towards the bottom again
不论你怎样搅水里的泥土，它还会再沉到水底的。 |
| 3. | Six italian scuba divers are attempting to live underwater for two weeks in a submerged house
6名意大利（水肺）潜水者正试着在水底的房子居住两个星期。 |
| 4. | She has lured as to an end , not a watery grave as the sirens of old , but a bloody battle
她诱惑我们走向终结，不是古老的塞壬那水底的坟墓，而是血腥的战斗。 |
| 5. | Sometimes it stayed underwater for as long as an hour , possibly sleeping inside rock crevices or hollows
它间中亦会躲在水底个多小时，很可能是在水底的石缝或洞穴中睡觉。 |
| 6. | Go scuba diving in the clear waters around sipadan , an island in malaysia , and discover an underwater paradise
前往马来西亚西巴丹岛附近的清澈海域潜水，以探索水底的乐园。 |
| 7. | I have grown up swimming in a lake , and never worried about things like drowning or being eaten by the 800 pound catfish lurking at the bottom
我是在一条河里开始游泳成长的，并从未担心溺水或者被潜伏在水底的800磅的鲶鱼吃掉。 |
| 8. | Each fish species has a preferred water layer where it spends most of its time : near the surface , in the middle , or near the bottom
每一种鱼都有偏好的水层，它们大部分时间都会呆在那儿：接近水面的上层水区、中层水区、或是接近水底的底层水区。 |
| 9. | Benthos the organisms that live on the bottom sediments of freshwater and marine ecosystems . they include plants and algae ( phytobenthos ) that grow below low tide mark
底栖生物（海底生物） ：在淡水或海洋生态系统底部生活的生物体。包括一些水底的植物和藻类。 |
| 10. | In , mid - leg deep , beheld her own white feet at the bottom ; while , out of a still lower depth , came the gleam of a kind of fragmentary smile , floating to and fro in the agitated water
珠儿一脚踏进去，水没到了膝盖，她看见的只是水底的自己的白脚丫同时，从更深的一层水下，映出了一种支离破碎的微笑，在动荡的水中上下漂浮闪动。 |
