过去，大部分公司需要回收海底平面以上的设备，而那些埋藏在地下的设备可以废弃，例如埋入海底的管线。

In the past, most companies have been required to recover the seafloor hardware which was above the mudline, and leave buried hardware such as pipelines in place.

youdao

过去，大部分公司需要回收海底平面以上的设备，而那些埋藏在地下的设备可以废弃，例如埋入海底的管线。

In the past, most companies have been required to recover the seafloor hardware which was above the mudline, and leave buried hardware such as pipelines in place.

youdao