volcanic vent

基本解释

To cause(molten lava)to pour forth from a volcanic vent.
使（岩浆等）喷出使（熔岩）流出火山口。
There is a buried volcanic vent of 10000 years old in the Xiaoshan district, whi ch is formed by tuffs resulting from multistage eruptions. This district was once a bay.
小山区域有距今1万余年前的掩埋火山口，小山的岩性为多期喷发的凝灰岩组成。
They have both the flooding and the intrusive lithofacies but also have the volcanic and the volcano vent lithofacies and the lithology is mainly the middle acidic intrusive rocks.
既有溢流相，又有侵入岩相，还有次火山岩相和火山通道相；岩性主要以中酸性侵入岩为主。

Its surface is no more unpleasant than the inside of a volcanic vent, where bacteria thrive.
NEWYORKER: The Martian Chroniclers