keep up with是個什麽意思？

牛津高階字典：keep up (with sb/sth), to move, make progress or increase at the same rate as sth/sb.(與……)齊步前進，並駕齊驅；跟上。keep up with sb ，to continue to be in contact with sb 與某人保持聯系keep up with stn，1. to learn about or be aware of the news, current events,etc.熟悉，了解（消息，形勢等）。2. to continue to pay or do sth regularly.繼續支付，繼續做。