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.
爲了開發安全的Web應用你必須不斷更新的所有層次和了解你的敵人。
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.
對外國人來說，其中一個最艱巨的任務就是跟進有關這些場所的信息，哪些是新開業的、哪些是業務擴大的及哪些是最新的。
www.chinadaily.com.cn
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).
要不斷更新訂閲的安全郵件列表，請閲讀安全博客，竝更新和安全檢查的習慣。

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.
我喜歡跟上潮流，因爲學習潮流很重要。
推薦古老店鋪 - SpeakingMax英語口語達人
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.
你們可能會有這種推測：,如果我們以這個速度繼續下去的話，這個學期,也衹能講到碳原子。
麻省理工公開課 - 化學原理課程節選

Each month, a quarter of a million people keep up to date on local government happenings.
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