动漫卡通头像 女生成熟:it has been demonstrated that 的意思？

it has been argued 如何翻译？ it has been demonstrated that 的意思？ it has been a while是什么意思？ 是It has been paid还是 It has been paid for? 为什么是It has been paid而不是 It has been paid for? 翻译句子Nothing has ever been done to it It has been great talking with you这话对不对？ It has been clear to the student player It has been announced thatcandidates_remain in their seats until all the papersb have been collecte An exception has occurred. It has been logged in the log server as exception #1