If we lose it now, we may never get it back.

He had tasted freedom only to lose it again.

他刚尝到了自由的甜头，却又失去了。

We've got so many complaints1 today, I think I'll go nuts. 3 lose it

今天我们收到好多投诉，我想我会发疯的。

When you take a paper passport with you, you might lose it.

随身携带纸质护照时容易遗失。

You lose it, it may not come around again.

要是输了，就再也没有机会。

If we give him the money now, before he's proved that he'll be able to pay it back, we may lose it completely. I think we should wait and see.

要是我们在他证明自已有偿还能力以前就借给他钱，我们的钱就可能落空。我看还是应该等等看。

Budget flush is the "use it or lose it" spending spree that occurs near the end of the fourth quarter.

Budget flush指每年第四季度常见的消费热潮，（预算结余）不花就不是你的了，即“突击花钱”。

I will lose it some day, I think.

有天我终将失去你的说。

For many of us, it is use it or lose it.

对我们多数人而言，要么使用它，要么失去它。

Only to lose it! Worst day of my life!

后来竟又输了那是我人生中最难过的一天

Again people asked, "How long ago did you lose it?" He answered, "I lost it two months ago."

又接着问：“丢了多长时间？”回答说：“丢失了两个多月了。”

And it's totally natural to lose it when something or somebody irritates us.

而当有什么激怒我们的时候，发脾气也是完全自然的事情。

We can go ahead and lose it all over again.

我们可以再把这批货弄丢一次。

We do not know the value of health till we lose it.

失去健康才知道健康的可贵。

You can have one of your own, but don't lose it!

你可以自己有一把，但别弄丢了！

You either use it, or lose it.

你要么使用时间，要么失去时间。

Keep it well and inform us whenever you lose it.

保管好存折，遗失请告诉我们。

Don't lose it on the way home.

别在回家的路上弄丢了。

This is your last chance. don't lose it.

只有这一次机会了，不要失掉这个机会。

He'll risk everything, and almost lose it all.

他孤注一掷，差点全盘皆输

One fundamental rule of language learning is: Use it, or lose it.

语言学习的根本法则就是用进废退。