放低;使失望.辜負…的期望,改小
let down v 1: move something or somebody to a lower position; "take down the vase from the shelf" [syn: {lower}, {take down}, {get down}, {bring down}] [ant: {raise}] 2: fail to meet the hopes or expectations of; "Her boyfriend let her down when he did not propose marriage" [syn: {disappoint}]