吹响这个哨子还是很有挑战性的。不信你试。

It's challenging to play this whistle. You can try it.

所以用它来锻炼肺活量也是极好的。

Obviously, you can build lung capacity through it.

之前我依次拿出正常大小的不种类的哨子，当我扑哧一声从后面掏出来这个哨子的时候，所有人都惊呆了然后哄堂大笑，实在太有节目效果了。

I first display the normal-sized whistles one by one, and when I take out this whistle, everyone around was amazed, then burst into laughte, hahahaha.