key(n) 註：keys是單數 key 的複數 音標 : [ki] 解釋 : 鑰匙 例句 : Which is the key to the back door? 翻譯 : 後門的鑰匙是哪一把？ 變化 : 單數 : key [ki] 複數 : keys [k'iz] 補充用法 : ● key ring 鑰匙圈● master key 萬能鑰匙● copy／duplicate a key 複製一把鑰匙● the key to 關鍵於● key money 保證金（房客付給房東的）
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