1.a narrow opening in a door through which a mail carrier can push envelopes, cards, and periodicals
1.The next day Ben gotup early and dropped the letter in the mail slot before heading to the worksite.
第二天，本起得很早，把信放进邮筒，便只身前往工地。
2.While she was at church, I put the envelope through her mail slot.
所以当她在教堂做礼拜时，我把信封投进了她的信箱里。
3.I even paused briefly with the letter part way into the mail slot before I thrust the letter into the mailbox.
甚至在信已经部分插入投信口时，还犹豫了一会儿才把它推进邮筒。
4.I should thank her every Thursday when I race home to pluck my Sports Illustrated from the mail slot.
每个星期四我跑回家迫不及待地从信箱里抽出《体育画报》时，我要感谢她。
5.They heard the click of the mail slot and flop of letters on the doormat.
他们听到邮箱盖咔的响了一声，然后是信件落到门口垫子上的声音。
6.a slot for coins in a vending machine; a mail slot.
自动售货机上的投币口；投信口