Tw o pairs of P C R prim ers are used to test the chlam ydia trachom atis insecretion from urethra and vagina.是什么意思_Tw o pairs of P C R prim ers are used to test the chlam ydia trachom atis insecretion from urethra and vagina.在線翻譯_英語_讀音_用法_例句