慢速英语:WHO: Smoking Costs More Than You Think

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短语讲解：

1. That rate adds up to almost six million people dying from such diseases every year.

add up to 总计
例句：How much does that add up to?
那些加起来总共是多少？

2. They are used to it. Also, tobacco contains the powerful drug nicotine.

be used to 习惯于，适用于
例句：It can be used to express almost any emotion .
它可以用来表达几乎任何一种感情。

3. He says the trade enables young people to buy cigarettes at low prices, become addicted to tobacco and suffer serious health problems.

addicted to 对...有瘾
例句：The british are addicted to cooking shows .
英国人非常沉迷于烹饪节目。