Rachel burst out as the door was flung open again.当门被再次猛地推开时，雷切尔冲了出去。The class burst out laughing.全班突然大笑起来。Then the applause burst out.然后突然掌声雷动。...

大声喊叫，突然发生，迸发...

burst out的音标：burst out的英式发音音标为：[bə:st aut]burst out的美式发音音标为：[bɚst aʊt]...