“晨昏”是一个书面词，“晨”是早上，“昏”是傍晚，合起来指从早到晚的时间。

"晨昏" is a literary term; "晨" means morning and "昏" means evening, together referring to the time from morning to evening.

这个词常用在文章里，也常说“晨昏定省”，表示子女每天照顾父母。

This word is often used in writing, and the phrase "晨昏定省" means children care for their parents daily.