The infection rates of Opisthorchis sinensis cyst in fishes declined in general in Xiangfan areas from 1985 to 2006, of which ecological environment changed are main reason.是什么意思_The infection rates of Opisthorchis sinensis cyst in fishes declined in general in Xiangfan areas from 1985 to 2006, of which ecological environment changed are main reason.在线翻译_英语_读音_用法_例句