In a randomized clinical trial, 47 subjects were assigned to a placebo, a topical nonsteroidal anti-inflammatory agent, or a topical anesthetic.

有一个随机临床试验，其中有47个人使用了无效对照剂，一般是常见的非类固醇抗炎药，或者常见的麻醉剂。

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In a randomized clinical trial, 47 subjects were assigned to a placebo, a topical nonsteroidal anti-inflammatory agent, or a topical anesthetic.

有一个随机临床试验，其中有47个人使用了无效对照剂，一般是常见的非类固醇抗炎药，或者常见的麻醉剂。

youdao