on the decline和in decline的区别

on the decline和in decline的区别 on the decline 还是in the decline decline on the grounds reject decline 和 refuse 的区别 decline the Is manner on the decline among teenagers? decline 的反义词是什么? decline的名词? DECLINE的意思 decline有婉言拒绝的意思,那in decline有婉言拒绝的意思吗? 英语翻译采矿里的decline是什么意思 比如：The main hoisting decline was driven 英语翻译翻译：The global decline in investment in international agr