exercise是什么词性？

exercise是什么词性？

exercise是名词，动词词性
n. 运动；练习；运用；操练；礼拜；典礼

vt. 锻炼；练习；使用；使忙碌；使惊恐

It's an exercise in stable-door shutting .
也可以说这是亡羊补牢。

Philip was much exercised over her age .
她的岁数可让菲利浦伤透了脑筋。

You ought to diet and take more exercise .
你应该节食并多做运动。

Look over exercises before handing them in .
把练习检查一遍再交。

He had been short of exercise for a long time .
他长期缺乏锻炼。