US mail slot a rectangular hole in the door or in a wall near the entrance of a house or other building, through which letters, etc. are delivered投递口,投信口
US mailbox a metal container in the street or other public place in which you can put letters for them to be collected and sent to someone else邮政信箱,信筒
👨🏻🏫 Mr. Ng 劍橋詞典 📚 – cambridge.mister5️⃣.net
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