乘火车的费用是乘飞机费用的一半用英语怎么说?The fare by train is __ __ the __ by plane.
题目
乘火车的费用是乘飞机费用的一半用英语怎么说?The fare by train is __ __ the __ by plane.
答案
The fare by train is half of the cost by plane.
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