add up和add..to..有什么区别比如说3加4等于7add 3 to four makes sevenadd up 3 and 4makes seven都可以吗.

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add up和add..to..有什么区别比如说3加4等于7add 3 to four makes sevenadd up 3 and 4makes seven都可以吗.
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add up和add..to..有什么区别比如说3加4等于7add 3 to four makes sevenadd up 3 and 4makes seven都可以吗.
add up和add..to..有什么区别
比如说3加4等于7
add 3 to four makes seven
add up 3 and 4makes seven都可以吗.

add up和add..to..有什么区别比如说3加4等于7add 3 to four makes sevenadd up 3 and 4makes seven都可以吗.
都可以,add 3 to four makes seven 比较方便,add up=加上 add to=加到