挂: Ⅰ动词1.(使物体附着于某处) hang; put up; suspend 短语和例子把帽子挂在衣架上 put [hang] the cap on the coat hanger; 挂幌子 (of shops) put up a signboard; 墙上挂着一幅画。 a picture is hanging on the wall. 天上挂着一轮明月。 a bright
保持: (维持; 使不消失或减弱) keep; hold; retain; maintain; preserve 短语和例子保持安静 keep quiet; 保持优势 hold on to a dominant [favorable] position; 保持警惕 maintain vigilance; be on the alert; 保持清洁 keep clean; 保持优良传
