1.使某物不落下wear a belt to keep one's trousers up 繫著腰帶以繫住褲子
2.使某事物處於高水平The high cost of raw materials is keeping prices up. 原料費用昂貴使得產品價格居高不下。
3.不讓(精力等)衰退; 維持; 保持They sang songs to keep their morale up. 他們唱著歌以保持高昂的士氣。
4.繼續使某事物保持同樣的(通常指高的)水平The enemy kept up their bombardment day and night. 敵軍一直日夜不停地狂轟濫炸。We're having difficulty keeping up our mortgage payments. 我們難以繼續支付分期償還的抵押貸款。
5.照舊做某事物或遵守某事keep up old customs, traditions, etc. 沿襲古老的風俗、傳統等Do you still keep up your Spanish? 你仍在學西班牙語嗎?
6.保養, 維修(房屋、花園等)The house is becoming too expensive for them to keep up. 他們的房子維修費用貴得越來越修不起了。