keep up是什么意思,最好有例句和中译

keep up
To maintain in good condition:
保持良好状态：
kept up the property.
保存财产
To persevere in; carry on:
保持；继续：
We asked her to stop talking, but she kept up.
我们请她别再说话了，但她依旧说下去
To continue at the same level or pace.
并行：按相同的水平或步伐继续下去
To match one's competitors, colleagues, or neighbors in success or lifestyle:
不落后，赶得上：赶上对手、同事或邻居，指在成就或生活方式上：
unsuccessfully tried to keep up with his associates.
没能赶上他的同事们

keep up
1. (使)不停止
Rain kept up all day.
雨下了一整天。
2. 保持
He kept up a correspondence with Tom.
他和汤姆保持通信联系。