1 (used about a volcano) to explode and throw out fire, rock that has melted (lava), smoke, etc （指火山）喷发，爆发

2 (used about violence, shouting, etc) to start suddenly （指暴力事件、呼喊等）勃发，突然发生: The demonstration erupted into violence. 示威突然演变成暴乱。

3 (used about a person) to suddenly become very angry （指人）突然发怒: George erupted when he heard the news. 乔治一听见这消息就大发雷霆。 ➔eruption noun [C,U] a volcanic eruption 火山爆发