Note: Do not place the sonar sensor directly on an icy surface, cut a whole in the ice first and then place the sonar in the water.
注意：不要将声纳传感器直接放在冰面，先在冰面上凿开一个洞，然后放置在水中。
On the other hand, Europa's smooth, icy surface likely conceals an ocean of liquid water.
另一方面，木卫二光滑的冰层之下很可能掩藏着一个液态水的海洋。
The Cassini spacecraft has found what may be the strongest evidence yet that Saturn's tiny moon Enceladus has an ocean beneath its icy surface.
卡西尼号土星探测器最近发现了可能能够证明在冰冷的土星卫星土卫二的地下存在着地下海洋的确切的证据。
Scientists have theorized for years that an ocean could be hiding beneath Europa's icy surface, one that even contains oxygen.
科学家们已经论证数年，他们认为木卫二的冰面以下潜藏着一片海洋，其中甚至含有氧气。
Satellite measurements of the icy surface of Antarctica have detected an active system of lakes under ice that is about one kilometer deep.
人造卫星的观测显示，南极洲的冰层下面有很多活水湖，深达一公里。
Satellite measurements of the icy surface of Antarctica have detected an active system of lakes under ice that is about one kilometer deep.
人造卫星的观测显示，南极洲的冰层下面有很多活水湖，深达一公里。
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