letter lock 中文意思是什麼
letter lock
解釋
字碼鎖。-
Letter - boxes at old buildings are usually sub - standard in that they are small and without clear address indications. some of them are without lock, jeopardising the security of the mail items inside
舊式大廈的信箱通常不合標準,它們體積小而且沒有清楚顯示地址,部分信箱更沒有鎖,不能保障郵件安全。
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