I hope you can continue to be happy

你可以───You can;快乐───happy

You can't have one without the other, as the song says.───就像歌里唱的那样，两者密不可分，不能只取其一。

You can chat to other people who are online.───你可以和其他在线的人聊天。

Let's sit down and then you can say what's up.───咱们先坐下来，然后你把事情告诉我。

You can engage in croquet on the south lawn.───你可以参加南边草坪上的槌球游戏。

You can talk frankly to me.───你可以坦率地对我谈。

You can go anyplace to get the car serviced.───你可以去任何地方给汽车作检修。

Imagine long golden beaches where you can wander in solitude.───想象一下那长长的金色海滩吧，在那里你可以独自徜徉。

You can all come? Excellent!───你们都能来？太好了！

Don't try to run before you can walk. 

Don't try to walk before you can crawl. 

You can have too much of a good thing. 

Be always as merry as ever you can, for no-one delights in a sorrowful man. 

You can choose your friends but you can't choose your family.