A key task for the UPU will be to ensure that the fierce competition in the postal market does not degenerate into chaos but proceeds in an orderly manner.是什么意思_A key task for the UPU will be to ensure that the fierce competition in the postal market does not degenerate into chaos but proceeds in an orderly manner.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句