add sth up和add up to和add sth to sth的区别,用法,意思等?

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addsthup和addupto和addsthtosth的区别,用法,意思等?addsthup和addupto和addsthtosth的区别,用法,意思等?addsthup和addupto和addst

add sth up和add up to和add sth to sth的区别,用法,意思等?
add sth up和add up to和add sth to sth的区别,用法,意思等?

add sth up和add up to和add sth to sth的区别,用法,意思等?
add sth up:比如说把这些数都加起来.add those numbers up..add up to:add up to 30.加起来后等于30 add sth to sth:.把什么加在什么上