If you must use a night-light, pick a 'low blue' one (lowbluelights.com).

如果你必须要开着灯睡觉，那就换个发出淡蓝色灯光的夜灯吧。

youdao

If you must use a night-light, pick a 'low blue' one (lowbluelights.com).

如果你必须要开着灯睡觉，那就换个发出淡蓝色灯光的夜灯吧。

youdao