1、laugh 既可做动词，又可用作名词，意为 大笑 为可数名词laughter n.笑。 2、笑声 也是可数名词 做名词时，laugh与laughter为同义词 “the sound of l......

burst into laughter汉语翻译：哈哈大笑起来例句：All the classmates burst into laughter when David acted out the ......