Question

到底是it's about two hours'ride还是two hours ride 还是两种都有 搞

Answer 1

您好！
正确的应该是 two hour's ride 和 two-hour ride

这就相当于在表示年龄的时候，可以是 I am 15 years old. 和 I am 15-year-old.
two-hour 15-year-old 相当于形容词

It's about two hours' ride to the park.
大约两小时骑车到…

A half-hour of walking in water equals the energy output of a two-hour walk in thewoods, one study showed.
某研究显示，在水里走上半小时和在树林里走上两小时所消耗的能量相同。