大多数吸烟的人都是在十几岁时开始吸的。

Most people who smoke began smoking in their teens.

《柯林斯英汉双解大词典》

平均开始吸第一支烟的年龄为13.0岁。

The average age of onset cigarette is 13.0 years old.

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还没有开始吸香烟的少男少女们可以接触微量的“社会病菌”，以便具备必要的技能去抵制来自他们同龄人的更大压力。

Boys and girls who have not yet started smoking can be exposed to a weak dose of "social germs" and thus learn the necessary skills to resist stronger pressure from their peers.

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