He blew a ring of blue smoke.

他吐出了一圈蓝烟。

《柯林斯英汉双解大词典》

As I completed my 26th lap the Porsche puffed blue smoke.

我跑完第26圈时，保时捷车喷起了蓝色的烟雾。

《柯林斯英汉双解大词典》

There is a sound of distant reapers, and yonder rises a blue line of cottage smoke against the woodland.

远处传来收割庄稼的声音，远处背靠树林的村舍那里升起一缕青烟。

youdao

A blue-gray haze from natural and now manmade sources hangs over them like smoke.

VOA: special.2009.09.28

Contrary to the "gel" part of its name, aerogels are highly porous solids that look like frozen blue smoke.

FORBES: Magazine Article

Justin's only answer is to blow twin plumes of blue smoke through his nostrils like a gay dragon missing a spark plug.

BBC: Trick of the light: A California road trip

Then he was gone, with a roar and a cloud of blue smoke, which the wind carried straight to us.

NEWYORKER: Hand on the Shoulder