What does"shuttling back "mean?

问题描述:

What does"shuttling back "mean?
HOHO,YES!But..It's too hard!
1个回答 分类:英语 2014-11-03

问题解答:

我来补答
Maybe you are referring "Shuttling back and forth ".rite?
意思是.前后来回的穿梭
 
 
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