这个咖啡机的胶囊用完后可以单独购买补充装。

You can buy separate ___refills for this coffee machine when the pods run out.

服务员过来给我的咖啡杯续了杯。

The waiter came to ___refill my coffee cup.

我的钢笔没墨水了，需要买几个替换芯。

My pen ran out of ink, so I need to buy some ___refills.

咖啡店的免费续杯服务很受欢迎。

The coffee shop offers free ___refills for their drinks.