The magician vanished in a puff of smoke.

魔术师在一股烟雾中突然不见了。

《牛津词典》

Suddenly there was a loud bang and a puff of smoke.

突然一声巨响，喷出一股黑烟。

《牛津词典》

During one of the controlled procedures, when the chicks were exposed to a puff of air, the hens' hearts rate increased and eye temperature decreased.

在其中一个控制过程中，当雏鸡暴露在空气中时，母鸡的心跳加快，眼睛温度降低。

youdao

The flame went out in a puff of gray smoke.

VOA: special.2010.05.01

Perhaps they think prosperity will vanish in a puff of terrorist smoke or a housing-market collapse.

ECONOMIST: The economy

However, if not, what looks like a cloud could, in fact, be merely a puff of smoke.

FORBES: Sales Pressure Cloud Hype

"Then the whole thing goes up in a puff of smoke, " she said.

WSJ: The Science Behind Dreamliner's Batteries