- 海底: the bottom of the sea; seabe ...
- 煤气管: gas pipe
- 海底煤层: ocean coal; undersea coal
- 海底煤矿: undersea coal mine
- 海底煤田: offshore coal field; submarine coal field; submarine coalfield; submarinecoalfield; undersea coal field
关注微信公众号：chachacidian，回复:海底煤气管，即可在微信中查询翻译
