sea
英 [siː]
[NOUN]
seas
1. [SING 单数型名词] 海洋
The sea is the salty water that covers about three-quarters of the Earth's surface.
双语例句
例：Most of the kids have never seen the sea.
这些孩子中的大多数从没见过大海。
2. [PL 复数] （某时、某区域的）海
You use seas when you are describing the sea at a particular time or in a particular area.
双语例句
例：He drowned after 30 minutes in the rough seas.
他在波涛汹涌的海里挣扎了30分钟后溺死了。
3. [C 可数名词] （作为海洋的一部分的或陆地围起来的）海
A sea is a large area of salty water that is part of an ocean or is surrounded by land.
双语例句
例：the North Sea.
北海。
NOUN. 名词
at sea
1. 在海上 , 在海里
At sea means on or under the sea, far away from land.
双语例句
例：The boats remain at sea for an average of ten days at a time.
这些船平均每次在海上航行10天。
out to sea , to sea
1. 到海上/向海上
If you go or look out to sea, you go or look across the sea.
双语例句
例：fishermen who go to sea for two weeks at a time.
每次出海为期两天的渔民们。
PHRASE. 习语
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