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海洋指的是广阔的水域，包括大海和大洋。我们常常用这个词来描述地球表面的大部分区域。

hǎi yáng zhǐ shì guǎng kuò de yù qí ， bāo kuò dà hǎi hé dà yáng 。 wǒ men cháng yòng cǐ gè cí yǔ lái miáo huì dì qū biān mào dà duàn qí lèi 。

Ocean refers to vast bodies of water, including seas and oceans. We often use this word to describe most of the Earth's surface area.

海洋这个词常用于描述地理、气候和水文等话题。例如，我们可以说‘海洋中的生物种类繁多’或‘海洋对天气有重要影响’。

hǎi yáng zhè gè cí cháng yòng lái miáo huì dǐ lǐ 、 qì tāi hé shuǐ wén dài nǎn topí 。 rú guǒ ， wǒ men kě yuē ‘ hǎi yáng zhōng de shēng wù zhǒng lèi fán duō ’ huò ‘ hǎi yáng duì qì tāi yǒu zhòng yào yǐng xiǎng ’ 。

This word is commonly used to describe topics such as geography, climate, and hydrology. For example, we can say 'the ocean has a wide variety of species' or 'the ocean significantly affects weather.'