It's no joke trying to find a job these days.

这些日子想找工作可不是件容易事。

《牛津词典》

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

你正在养伤，受了寒可不是玩儿的！

《新英汉大辞典》

But actually it's no joke.

但是它实际上不是笑话。

youdao

But really, it's no joke - they're all trying to be the next governor of Texas.

NPR: Friedman Shakes Up Texas Governor Race

Of course, to the manufacturers and marketers who have realized that there's big money in it, men's grooming is no joke.

WSJ: Men's Grooming With Will Arnett and Jason Bateman: Hello, 'Mansome'

The description on Amazon reads like a bizarre joke: "Swastika, starring Adolf Hitler, Eva Braun, Josef Goebbels et al." It's bizarre, but no joke.

WSJ: Pariah | Swastika | It's About You | Pariah Stands Apart��As a Fresh Teen Tale | Film Reviews by Joe Morgenstern