The coast belt surrounding Bohai Bay of China contains a lot of continental oil and gas fields that extending to the sea.
中国环渤海沿岸众多的油、气田延至海滨，因地表工程环境条件复杂，使油、气勘探开发很困难。
The coast belt surrounding Bohai Bay of China contains a lot of continental oil and gas fields that extending to the sea.
中国环渤海沿岸众多的油、气田延至海滨，因地表工程环境条件复杂，使油、气勘探开发很困难。
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