伏: Ⅰ动词1.(身体向前靠在物体上; 趴) bend over; lie prostrate 短语和例子伏地 lie on the ground2.(低下去) subside; go down 短语和例子起伏 rise and fall; undulate3.(隐藏) hide 短语和例子潜伏 conceal; hide; lie low; 埋伏 ambush; 昼伏夜出 hi
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