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- When it concerns the deep submergence rescue in the world, on the condition of low visibility and great-ocean current, especially large leaning, it is very difficult for DSRV to mate with the wrecked submarine under water and realize rescue. 就目前世界各国的深潜救生技术而言,在潜艇失事海域的海况比较恶劣的情况下,尤其是当失事潜艇有较大的倾斜时,成功地实现与失事潜艇的对接从而营救失事艇内人员仍然是非常困难的,主要原因有以下两个方面:
- A diesel submarine is able to cruise under water for a short period of time, but a nuclear one is able to cruise under water much longer. 柴油潜艇在水下只能航行非常短的时间，而核潜艇在水下航行的时间要长得多。
- Under water, famine; under snow, bread. [谚]洪水造饥馑，瑞雪兆丰年。
- Several fields are under water after the heavy rain. 大雨过後有几片耕地被淹。
- The submariners must have "ears" to take the place of "eyes" when the submarine has to stay under water. 当潜艇不得秒停在水下时，潜水员必须用“耳朵”代春“眼睛”。
- Able to set and harden under water, as Portland cement. 在水中变硬的能在水下定型并变硬的，如波特兰水泥
- The submarine to which an atomic engine is fitted can stay under water for months. 那艘装上了核发动装置的潜水艇能在水下停留数月。
- Most amphibians live near or under water. 大部分的两栖动物住在靠近水边或水底。
- The fields were under water after the heavy rain. 大雨后田野为水所淹。
- The boy wanted to duck under water. 这个男孩想潜入水中。
- A diesel submarine is able to cruise under water for a short period of time, but a nuclear one is. 柴油潜艇在水下只能航行非常短的时间,而核潜艇在水下航行的时间要长得多。
- I will time when you stay under water. 我来计你呆在水下的时间。
- It will take root in the mud under water. 在水底的淤泥中扎根生长。
- Under water, famine, under snow, bread. 洪水造饥馑，瑞雪兆丰年。
- He learns to breathe out under water. 他学习在水下吐气。
- The boy wanted to duck under water . 这个男孩想潜入水中。
- Coastlines will disappear under water. 海岸线将消失在海水之下。
- What about structures that are partly under water? 部分结构在水下的建筑怎么说?
- How Do Frogs Breathe Under Water? 青蛙在水下呼吸的秘密是什么?
- How long can you remain under water? 你能在水底下呆多久?
