"submarines" in Chinese (Simplified)
潜艇
Definition
潜艇是在海面下航行和操作的船只。主要用于军事目的，也可用于科学研究或救援任务。
Usage Notes (Chinese (Simplified))
“Submarines” 为 “submarine” 的复数。主要出现在军事或技术语境中。不要与食物‘submarine sandwich’ 混淆。常用短语：‘核潜艇’、‘攻击型潜艇’。
Examples
Many submarines patrol the oceans for security.
许多**潜艇**为安全在海洋中巡逻。
My brother loves reading about submarines in history books.
我哥哥喜欢在历史书中阅读关于**潜艇**的内容。
Submarines can stay underwater for a very long time.
**潜艇**可以在水下停留很长时间。
Modern submarines are almost impossible to detect when they're deep underwater.
现代**潜艇**在深水中几乎无法被发现。
During the tour, we saw old submarines that were used in World War II.
参观时，我们看到了二战中使用过的老**潜艇**。
People are fascinated by how submarines can create their own oxygen underwater.
人们很着迷于**潜艇**如何能在水下制造氧气。