安慰针
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placebo needle technique 盲针技术
placebo needle
安慰剂针
以上为机器翻译结果，长、整句建议使用 人工翻译 。
As part of the study, each time participants receive counseling they will be reminded that they could be getting a placebo and cautioned against needle-sharing and unprotected sex.
CNN: Vaccine
In trials among 2, 500 needle users in Thailand, placebo and vaccine will be divided evenly.
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