这种强效安眠药含有鸦片类成分，请在医生指导下使用。

This powerful sleeping pill contains an ___opiate, so use it only under a doctor's supervision.

购物成瘾有时像是一种麻醉剂，让人暂时忘记生活的压力。

Shopping addiction can serve as an ___opiate, temporarily masking life's stresses.