It is necessary to do outside activities.

从事课外活动是很有必要的。

youdao

Limit their outside activities to the morning and evening hours.

把他们的户外活动限制在早晨和晚上的时间。

youdao

Limit their outside activities to the morning and evening hours.

把他们的户外活动限制在早晨和晚上的时间。

youdao