有些孩子写作业拖延时间到晚上十点，减少了睡眠时间，导致第二天上课没有精神，降低了学习效率。

Some children write operation delay time until ten p. m., reduced sleep time, resulting in the very next day class no spirit, reduce the learning efficiency.

youdao

有些孩子写作业拖延时间到晚上十点，减少了睡眠时间，导致第二天上课没有精神，降低了学习效率。

Some children write operation delay time until ten p. m., reduced sleep time, resulting in the very next day class no spirit, reduce the learning efficiency.

youdao