h是hour的缩写。
hourn.小时；约一小时的时间；(工作、办公等的)固定时间；
例如There was so much traffic that we were an hour late.
It takes me an hour to walk there and back.
我步行往返要花一个小时。
You\'re allowed an hour to complete the test.
你们有一个小时的时间来完成这次测验。
The performance finally started half an hour late.
晚了半小时以后演出终于开始了。
