海洋生态环境的变化。
控制海水污染，保护海洋生态环境迫在眉睫。
It is in great requirement to control marine pollution and protect marine ecological environment.
海洋是我国生态环境的重要组成部分。
The sea is one of the most important parts of our ecological system.
海洋是我国生态环境的重要组成部分。
The sea is one of the most important parts of our ecological system.
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