S.I.), a group with health programs in 65 nations worldwide.She says she stumbled upon the issue of human trafficking while working with P.S.I.是什么意思_S.I.), a group with health programs in 65 nations worldwide.She says she stumbled upon the issue of human trafficking while working with P.S.I.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句