多人一管注射方式，水冲洗或浸泡、酒精棉擦拭灭菌玻璃注射器，反复使用和丢弃一次性注射器等是非安全注射的主要因素；
The risk factors of unsafe injection were mainly water-washing or dipping-in-water, or alcohol-tampon-cleaning of glass injectors and repeated use or discarding of disposable injectors.
多人一管注射方式，水冲洗或浸泡、酒精棉擦拭灭菌玻璃注射器，反复使用和丢弃一次性注射器等是非安全注射的主要因素；
The risk factors of unsafe injection were mainly water-washing or dipping-in-water, or alcohol-tampon-cleaning of glass injectors and repeated use or discarding of disposable injectors.
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