letter-box

n.邮箱，邮筒；信箱

let sb through, let sb. in, let sb. into, let sb. out, let slide, let sth in, let sth into sth, let up, let's, let-down, let-up, let...down, lethal, lethally, lethargic, lethargically, lethargy, letter, letter of credit, letter-bomb, letterhead, lettering, letterpress, letters, letting, lettuce, leucocyte (US leukocyte), leucotomy, leukaemia (US leukemia), levee, level, level-crossing, level-headed, levelheaded, leveller (US leveler), lever, leverage, leveret, leviathan, Levis,