With Facebook, she could keep her relatives up to date on what she was doing.

有了 Facebook，她可以让亲戚们随时了解她在做什么。

youdao

With Facebook, she could keep her relatives up-to-date on what she was doing.

在脸书上，她可以让亲戚们随时了解她的近况。

youdao

It pays to keep up to date with your work.

工作能跟上时代是有利的。

《牛津词典》

and I like to keep up to date with them because it's important that we learn about it.

我喜欢跟上潮流，因为学习潮流很重要。

推荐古老店铺 - SpeakingMax英语口语达人

It was "working closely with the relevant authorities to keep up to date with ash movement and forecasts" and would adjust flight routes if necessary.

BBC: New Zealand's Mount Tongariro erupts

Contributors can check the Zooniverse website to keep up to date with the project's progress.

BBC: Call for public to study Mars images

Doctors must keep up to date with clinical practice and must be appraised regularly.

BBC: Report recommendations at a glance