Decaf is short for decaffeinated, meaning it doesn't have caffeine.

Decaf是脱咖因（decaffeinated）缩写，意思是不含咖因。

Red means decaffeinated, with darker purples and greys for the stronger, more intense flavours.

红色表无咖因，深紫色和灰色表更强烈、更强烈口味。

Willet says the findings extend to both caffeinated and decaffeinated coffee – or decaf, as Americans often call it.

他说这些发现涉及所有含咖因和不含咖因咖。

The researchers found only a small health benefit in drinking two decaffeinated cups of coffee per day.

研究人员发现， 每天喝两杯不含咖因咖对健康只有很小好处。

I know. It's just that the boss said that decaffeinated coffee - that's coffee with the caffeine removed - was a good idea, healthier, you know.

我知道。只是老板说喝脱因咖更好、更健康，你懂。脱因咖就是去除咖因咖。