为什么brush the teeth中间要加the与brush teeth有什么区别

为什么brush the teeth中间要加the与brush teeth有什么区别 刷牙翻译为brush teeth,还是brush the teeth? Brush the teeth牙要加s吗 How often does Candy brush the teeth outside brush teeth the surface of your you,the,should,your,of,surface,brush,teeth(.) 刷牙的英语怎么写 brush the teeth 行不行 Brush the outside surface of your teeth.的意思． brush my teeth是什么意思? brush teeth 怎么读 brush my teeth 为什么一定是tooth brush?而不是teeth brush?