词根来源于morning，其构词法是词根morn+后缀ing，中文意思是n. 早晨黎明初期

The system was down all morning.系统整个上午都无法运行。

The morning has just flashed by.这个上午转眼就过去了。

The symptoms of morning sickness would be listed and horrors of childbirth pictured.它会列出晨吐的症状，描绘分娩的恐惧。