adj. 1.在水下的，水中的。 2.用于水下的。 3.【造船】吃水线以下的。 短语和例子 an underwater boat 潜水艇。 adv. 1.在水下。 2.【造船】在吃水线以下。 n. (海洋等)水面下的水；水下，水底。
growing or remaining under water; "viewing subaqueous fauna from a glass-bottomed boat"; "submerged leaves" 同义词：subaqueous, subaquatic, submerged, submersed,
beneath the surface of the water; "submerged rocks" 同义词：submerged, submersed,
Underwater is a term describing the realm below the surface of water where the water exists in a natural feature (called a body of water) such as an ocean, sea, lake, pond, or river. Three quarters of the planet Earth are covered by water.
例句与用法
1.
We experimented with various underwater techniques as we worked . 我们在工作时试验了各种水下技术。
2.
Underwater there is no air for a combustion engine to consume . 在水下根本没有空气可以供内燃机使用。
3.
Our underwater explorations also helped to confirm the theory . 我们的水下考察也有助于证实这个理论。
4.
When they left their underwater home they felt quite sad . 在离开她们的水下之家时，她们感到依依不舍。
5.
It confirmed the existence of underwater features of considerable magnitude . 还证实了相当多水下特征的存在。
6.
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。
7.
On vessels equipped with an underwater log the setting may be made automatically . 对于装有水下测程仪的船舶，定位可以自动进行。
8.
These conditions may be regarded as corresponding to a shallow underwater explosion . 可以把这个条件看作是浅层水下爆炸的相应条件。
9.
For underwater bursts at certain depths, the radioactive cloud may not be formed . 当在水下某一深度爆炸时，放射性云团也许不会形成。
10.
With this equipment, you can explore a new world of adventure and underwater beauty ! 有了这套设备，你就能去冒险探索一个美丽的海底新世界。
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