讲解文本：

no joke 不是闹着玩的，不容易的事，并非儿戏

It was no joke carrying those heavy bags.

搬那些重袋子可不是件轻松的事。

It's no joke catching a cold when you are recovering from an injury.

你正在养伤，受了寒可不是玩儿的!

疯狂练习吧!