One does not inhale the smoke, but if one gets very good at it, one does not even have to puff: the slight vacuum created in the mouth by nose breathing will draw the finest of puffs through the stem.

不需要将烟吸入，但若有人精于此道，都不必再次吸：鼻孔呼吸时在口腔内造成的小小的真空就足以将那缕轻烟吸回烟嘴。

youdao

One does not inhale the smoke, but if one gets very good at it, one does not even have to puff: the slight vacuum created in the mouth by nose breathing will draw the finest of puffs through the stem.

不需要将烟吸入，但若有人精于此道，都不必再次吸：鼻孔呼吸时在口腔内造成的小小的真空就足以将那缕轻烟吸回烟嘴。

youdao