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1·Traditionally, tobacco companies look at the chemical composition of tobacco and the smoke it produces when drawn through a smoking machine to assess its potential for harm.

传统上，烟草公司通过研究烟草和由“吸烟机”产生的烟雾的化学成份来评价香烟的潜在危害。

2·Yes, life expectancy was lower in 1973, but some of that was smoking, and I don't smoke. So where do I sign up for the time machine?

的确1973年的平均寿命是低一些，但是别人抽烟，我不抽。那么我到哪里报名参加时光旅游呢？

3·In front of the reception there is a cosy sitting corner (the only smoking area) and there is also a snack vending machine.

在接待台前设有舒适的客厅角落(唯一的吸烟区)，并设有零食自动贩卖机。

4·It is equipped a smoking device. The whole machine has a compact structure.

自身带有烟尘处理装置，整机结构紧凑。