keep up to

基本解释

In order to develop secure web applications you have to keep up to date on all layers and know your enemies.
为了开发安全的Web应用你必须不断更新的所有层次和了解你的敌人。
One of the hardest tasks for some foreigners is to keep up to date with what is still open, what is under new management and what is the latest place.
对外国人来说，其中一个最艰巨的任务就是跟进有关这些场所的信息，哪些是新开业的、哪些是业务扩大的及哪些是最新的。
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To keep up to date subscribe to security mailing lists, read security blogs and make updating and security checks a habit (check the Additional Resources chapter).
要不断更新订阅的安全邮件列表，请阅读安全博客，并更新和安全检查的习惯。

But they expect that final results in October will show it can keep the liquid stable for up to twelve months.
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。
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And you might have kind of been projecting ahead and thinking if we keep up at this pace, pretty much we would only get to carbon by the end of the semester.
你们可能会有这种推测：,如果我们以这个速度继续下去的话，这个学期,也只能讲到碳原子。
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Each month, a quarter of a million people keep up to date on local government happenings.
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