我看到有些答案是three和hour之间没有“-”的，那怎么表达？是否可以three hours' train？谢谢！
第1个回答 2009-06-08
不用加's,直接说three hours train
第2个回答 2009-06-08
three-hour ride on (a) train.
three-hour ride by train
three-hour ride by train
第3个回答 2009-06-08
three hours' train本回答被提问者采纳
