volcanic vent

• n. 火山口

例句

用作名词 (n.)

1. Standing on a volcanic crater, even that of an extinct volcano, is very dangerous.
   别看是死火山，站在火山口也是很危险的。
2. Even at these hot volcanic vents, bacteria survive using the poisonous chemical hydrogen sulfide to create food.
   即便是在这种火山口，细菌通过食用含有毒化学物质氢化硫的食物来存活。