two mothers andvtwo daughters are planning to go london by train.but they o
题目
two mothers andvtwo daughters are planning to go london by train.but they o
问题答错了，SORRY！！
问题是：two mothers and two daughters are planning to go to London by train.but they only need to buy three tickets.why?
请用英语回答！！！
答案
因为她们分别是奶奶、妈妈、女儿……
翻译：
Because they are grandmother,mather.daughter……
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