your变换首字母成一个新单词

把首字母换成h，组成新单词hour，意思是：n.小时约一小时的时间(工作、办公等的)固定时间某个时间长时间重要时刻整点点钟。

例句：1.The treatment should be repeated every two to three hours.

这种治疗方法应该每隔两到三小时重复一次。

2.Then they walked up to the top， and it took about one hour and a half.

接着步行上山，爬了约一个半小时的时间。

3.It was not， however， until October， 1893， after I had recovered from the fatigue and excitement of my visit to the World's Fair， that I began to have lessons in special subjects at fixed hours.

总之，直到1893年10月，也就是在我从参观世界博览会的疲劳和兴奋状态中恢复平静之后，我才开始在固定时间内学习一些特殊的课程。