ten o`clock is [too late an hour] for a boy of his age to stay up.

问题描述:

ten o`clock is [too late an hour] for a boy of his age to stay up.

an hour too late

对于这个年纪的孩子来说,熬夜到十点已经晚了一个小时了。

对于他这个年纪的孩子来说,到十点钟就已经是晚了一个小时睡觉了。

晚了一个小时

9 点钟上传睡觉对他最好.