keep up是什么意思 - keep up中文意思和解释
keep up基本解释
,保持；继续；不低落；不落后,同近
keep up相关例句和用法He lengthened his stride to keep up with his father..他迈开大步跟上他父亲。
keep up英英释义跟上英释中释If you keep up with someone or something that is moving near you, you move at the same speed.