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！

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