In China, for example, most new infections now result from heterosexual sex, rather than from intravenous drug use, as in the past.是什么意思_In China, for example, most new infections now result from heterosexual sex, rather than from intravenous drug use, as in the past.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句