participating countrypɑːˈtɪsɪpeɪtɪŋˈkʌntrɪ短语¹⁴⁴⁹⁷²⁺² 基本例句 n.参加国 During the Week, each participating country implements activities to inform and engage key target groups, and to target critical challenges as regards immunization in their country. 在这一周期间，每一个参加国实施活动，向主要目标群体提供信息和使它们参与，并将其国家免疫方面的严重挑战作为目标。 who