lose one's balance

失去平衡。

keep one's balance

保持平衡

The car lost a wheel,and lost its balance.

汽车掉了一个轮子，失去了平衡。

I'm trying not to lose balance between work and the rest of my life.

我努力不让我的工作和休息失去平衡。

A:You've spent too much time on your computer games.

你花太多时间在电脑游戏上了。

B:So waht?

那又如何?

A:Nothing,just remind you not to lose balance between study and entertainment.

没什么，就是提醒你不要在学习和娱乐之间失去平衡。

背景音乐：Husky Rescue-summertime cowboy