名词

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1. 海洋；大海
The ocean is the sea.

2. （五大洋之一的）洋
An ocean is one of the five very large areas of sea on the Earth's surface.

3. 许多；大量
If you say that there is an ocean of something, you are emphasizing that there is a very large amount of it.

4. 沧海一粟;九牛一毛
If you say that something is a drop in the ocean, you mean that it is a very small amount which is unimportant compared to the cost of other things or is so small that it has very little effect on something.

1. a large body of water constituting a principal part of the hydrosphere

2. anything apparently limitless in quantity or volume

Synonym: sea