she sleeps at nice hours every night 改错

问题描述:

she sleeps at nice hours every night 改错

she sleeps for nine hours every night

nine 吧

NINE HOURS 吧

at---during

1,nine hours---->nine,她每晚9点睡觉
2,she sleeps nine hours every night,她每晚睡9小时

she sleeps at nine o'clock every night