zhè / zhǒng / shì / jūn / tǐ / kě / yǐ / bāng / zhù / kòng / zhì / yǒu / hài / xì / jūn / de / shù / liàng这种噬菌体可以帮助控制有害细菌的数量。This bacteriophage can help control the number of harmful bacteria.