名词中文翻译
中文翻译：止痛药
同义词：
['analgesic', 'pain reliever']
例句：
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1. She took a painkiller to ease her headache.
她吃了一片止痛药来缓解头痛。
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2. The doctor prescribed him an analgesic for his fever.
医生给他开了一种止痛药来治疗他的发烧。
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3. Painkillers are used to treat acute and chronic pain.
止痛药用于治疗急性和慢性疼痛。