请给我一杯低咖啡因咖啡好吗？

Could I have a ___decaffeinated coffee, please?

我晚上更喜欢喝低咖啡因茶。

I prefer ___decaffeinated tea in the evening.

低咖啡因版本的味道一样好。

The ___decaffeinated version tastes just as good.