cut down,cut down to,cut down on,cut off有什么区别

cut down,cut down to,cut down on,cut off有什么区别
cut down,cut down to,cut down on,cut off有什么区别

cut down,cut down to,cut down on,cut off有什么区别
cut down 削减,减低
cut down to 削减到,减低到
cut down on 是短语,和 cut down 意思相同,后跟名词
cut off ：截断