1 [I] to make a loud, deep sound 发出响而深沉的声音；咆哮；吼叫: She roared with laughter at the joke. 她听了那个笑话就哈哈大笑。The lion opened its huge mouth and roared. 那只狮子张开大口吼叫。

2 [I,T] to shout sth very loudly 喊着说出；大喊

3 [I] roar along, down, past, etc to move in the direction mentioned, making a loud, deep sound 向某方向隆隆行进: A motorbike roared past us. 一辆摩托车隆隆地从我们身边驶过。 roar noun [C]: the roar of heavy traffic on the motorway 高速公路上繁忙交通的嘈杂声roars of laughter 大笑声