Biogas is smokeless and has no smell.

生物沼气无烟无味。

All bright and glittering in the smokeless air.

纯净的空气中，一切那样的明朗亮丽。

The tall chimney of the kiln was smokeless, far off over waste land.

窑炉高高的烟囱没有烟， 远远地在荒地上。

Caydan, tobacco is used to make cigarettes, but it's also used to make cigars and smokeless tobacco, also known as chew, snuff, dip, or spit tobacco.

柯丹，烟草用来作香烟，但还用来作雪茄以及无烟烟草，它也被人们称之“烟”。

Snus is such a popular part of Swedish culture that the country demanded an exemption to the EU's ban on smokeless tobacco when it joined the EU in 1995.

烟是瑞典文化中非常受欢迎的一部分，以至于瑞典在1995年加入欧盟时要求欧盟豁免对无烟烟草的禁令。

He watched her until she became a tiny black speck and vanished, then switched his gaze to Hagrid's hut, clearly visible from this window, and just as clearly uninhabited, the chimney smokeless, the curtains drawn.

他一直注视着它，直到它变成了一个小黑点，彻底消失不见了，然后他把目光转向海格的小屋，从这扇窗户正好可以看得很清楚，然而烟囱没有冒烟，窗帘拉得紧紧的，很明显仍然没有住人。