Come on! It's time we made a start.

　　快點！我們該出發了。

　　Come on, it's time to go home.

　　快點，該回家了。

　　Come on, it's time we left.

　　快點，我們該走了。

　　Come on! We don't have all day!

　　快一點！我們的時間不多了！

　　I'd like to come on to that question later.

　　我想以后再討論那個問題。