She kept up with her sisters and brothers at the gym and the swimming pool.

她在健身房和游泳池里与她的兄弟姐妹们继续联系。

He kept up with me easily.

他轻而易举地跟上了我。

Mr. Hughes kept up with them.

休斯先生跟上他们。

Or, "Has my buyer kept up with their insurance".

卖方有时要求买方安排装运的运费和保险。

Supply could never have kept up with consumption.

供给永远赶不上消费。

She still kept up with her classmates after graduation.

毕业后她仍然与她的同学保持联系。

Or, "Has my buyer kept up with their insurance payments?"

或者“我已经买了保险金，跟不上”？

Furthermore, laboratory analysis has kept up with the times.

另一方面实验室的分析技术也紧跟时代。

He kept up with his friends after he went to the U. S.

他去美国后仍然和朋友们保持联系。

The polar bear has kept up with the retreating ice pack so far.

眼下，浮冰群退到哪里，北极熊就跟到哪里。