All bright and glittering in the smokeless air.

纯净的空气，那样的明朗亮丽。

Biogas is smokeless and has no smell.

生物沼气无烟无味。

And the answer is: No they don't. E-cigarettes are smokeless.

不会，电子烟是无烟的。

So smokeless cigarettes are cigarettes without smoke — they don't produce any smoke.

所以 smokeless cigarettes 是有烟雾的香烟——它们不产生任何烟雾。

And smokeless is a key word in this programme because it ends with the suffix less, spelt l-e-s-s. This means 'without'.

Smokeless 是本期节目的个关键词，因为它以 less 结尾，拼写为 l-e-s-s，意思是“有”。

Number three: To cut the risk of cancer, some people smoke e-cigarettes which are a) smokeless b) smokeless-free c) smoke-free.

为了降低患癌症的风险，些人抽的电子烟是 a) smokeless b) smokeless-free c) smoke-free.

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，烟草用来制作香烟，但还用来制作雪茄以及无烟烟草，它也被人们称之为“湿鼻烟”。

We're going to extend the smoking ban to include e-cigarettes, which may be smokeless, but they aren't harmless, and we're going to raise the penalties for careless drivers.

我们将把禁烟令扩大到电子烟，电子烟可能是无烟的，但它们不是无害的，我们还将加大对粗心司机的惩罚。