letter

n.字母，文字；信，函件

let pass, let sb off (with sth), let sb out, 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 of credit, letter-bomb, letter-box, 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,