The researchers spent two years teaching their monkeys to exchange tokens for food.

研究者们花了两年的时间教这些猴子用代币换取食物。

Normally, the monkeys were happy enough to exchange pieces of rock for slices of cucumber.

正常情况下，猴子很愿意用几块石头换几片黄瓜。

Which situations are common to exchange gifts?

在哪些情况下交换礼物比较常见？

We have an opportunity to exchange views tomorrow.

明天我们将有机会交换看法。

One, no gold ever had to exchange hands.

交换的不是真实的金币。

I guess we'll have to exchange it, too.

我想我们还得去换一件。

We would like to exchange our grain for your timber.

我们想用我们的谷物来换取你们的木材。

What commodities do you have to exchange for our grain?

贵方用什么商品来交换我们的货物？

Lung diseases often make it harder to exchange oxygen, right?

肺部疾病常常使病患较难换气，对不对？

We would like to exchange our grain for your timber.

我们想用我们的谷物来换取你们的木材。

To exchange stories of happier times, knowing they will come again.

交流快乐时光的故事，知道它们会再来。

I'd like to exchange some NT dollars for dollars, please.

我要把一些新台币换成美元。

Am I allowed to exchange pleasantries upon meeting this colonel? Yes.

我在见到这个上校的时候可以跟他问好吗? 可以。

The bipartisan group gives lawmakers the chance to exchange policy ideas.

跨党派小组给予议员交流政策理念的机会。

The boys made a bargain with one another to exchange baseball gloves.

这些男孩子彼此约定交换棒球手套。

Oh, wonderful! You speak English! I need to exchange this foreign currency.

哦，太棒了！你讲英语！我需要兑换一下外币。

And that was useful because you didn't have to exchange cash.

这很有用因为你不是非得换现金。

It's a custom among entomologists to exchange specimens when they meet.

昆虫学家会面时有互换标本的习惯。

We agreed to exchange copies of our work. Let me see yours.

我们说好要交换各自的研究。让我看你的。

We know how to exchange our time and energy to reach our goals.

我们知道如何交换我们的时间和精力来达到我们的目标。