你可以给我一个镇痛剂吗？

Will you give me a pain-killer?

在之前一段时间内，汇率成了镇痛剂。

For a while the exchange rate had been a balm.

现在只能坐在长沙发上拼命擦镇痛剂。

Now I'm on the couch and popping painkillers.

最常见与药物不良反应相关的药品是抗凝血剂，镇痛剂，利尿剂。

Drugs most commonly associated with ADRs were anticoagulants, analgesics and diuretics.

阿片类镇痛剂的临床应用具有悠久的历史。然而，阿片受体的功能，特别是其在脑内的作用，尚未完全阐明。

The use of opioid analgesics has a long history in clinical Settings, although the functions of opioid receptors, especially their role in the brain, are not well understood yet.