字典網>> 英漢字典>> O開頭詞條>>on a voluntary basis的意思 漢英字典on a voluntary basis中文翻譯：在自願的基礎上 字典網相關詞條：on pain of invalidity on-off switch one's pet aversion on the complaint of one-output terminal onion oil on the listen on one's toe on the sunny side of on detection of