在上学期间的晚上用英文怎么表达？

　　比尔在上学期间学习美术。

　　Bill took up art while at school.

　　也许你的家人或朋友可以在你上学期间帮你照看一下小孩。

　　Perhaps a family member or friend can care for your baby while you're in school.

　　在上学期间的晚上，妈妈不允许他熬夜玩电脑。

　　Mom doesn't allow him to stay up playing computer games on school nights.

　　儿童在上学期间和星期日最多能工作多少小时？

　　What is the maximum number of hours that a child can work on a school day or Sunday?