Beat down是一个名词，与beating的意思非常相似。被某人身体伤害一段时间。 （一拳不叫beating ，多拳叫beating 。） 例： The kid gave his bully a beat down. (He beat down the neighborhood bully.) 例子： He beat down the neighborhood bully. （他殴打了邻居的恶霸。）另一方面， beat up意味着用拳打脚踢伤害某人。它是一个常见的短语动词，与assault具有相似的含义。示例： Those students are beating each other up. （那些学生互相殴打。） 示例： Should we call the cops? That person looks like they're beating someone up. （我们应该报警吗？我认为他在打人。）