Results SY positive rate was 2.75%, Hepatitis C positive rate was 1.00% among the 500 female commercial sex workers and none were HIV positive.是什么意思_Results SY positive rate was 2.75%, Hepatitis C positive rate was 1.00% among the 500 female commercial sex workers and none were HIV positive.在线翻译_英语_读音_用法_例句