I hate old people who dress like teenagers and think they're hip.我很讨厌老年人穿成青少年模样，还自以为很赶得上潮流。I don't know whether we can catch the train.我不知道能否赶得上火车。He can ski with the best of them. 他的滑雪技术赶得上那些最棒的。The girls had to hasten their steps to keep pace with his.女孩子们得加快步子才能赶得上他。