exchange

The exchange of prisoners took place this morning.

In exchange for tuition, I could work in the office.

Many tropical rain forest plants (like those in other forests) have mycorrhizal (fungus-root) partners whose delicate hyphae spread through great volumes of soil, from which they release and absorb minerals and ferry them back to the host plant in exchange for needed organic compounds.

Trade in shell, obsidian, and other commodities seems to have been on the rise, and anthropologists suspect that the exchange of perishables (such as skins, foodstuffs) and salt was also on the increase.

Long before cereal agriculture took hold far south of the Sahara, some hunter-gatherer groups in the savanna woodlands of eastern and southern Africa may have acquired cattle, and perhaps other domesticated animals, by gift exchange or through raids on herding neighbors.

I understand, but that seems like a small risk to take in exchange for giving students a chance to talk publicly, interactively about issues they care about.

Well, the primary goal of the Global Enrichment Initiative is simply cultural exchange.

Bartering was a basic trade mechanism for many thousands of years; often sporadic and usually based on notions of reciprocity, it involved the mutual exchange of commodities or objects between individuals or groups.

Interest in long­-distance trade brought about some cultural homogeneity from trade and gift exchange, and perhaps even led to piracy.

Juliet and David exchanged glances.

I'd exchange her for mine in a trice.

A common means of this process taking place is trade, travelling merchants or trading hubs, places where people from various areas all come together and ideas get exchanged.

During NREM (the phase of sleep in which there is no rapid eye movement) breathing becomes deeper and more regular, but there is also a decrease in the breathing rate, resulting in less air being exchanged overall.

The amount of air exchanged is even lower in REM than NREM because, although breathing is more rapid in REM, it is also more irregular, with brief episodes of shallow breathing or absence of breathing.

Nick went on the French exchange.

Uh, anyway, what I, well, a while ago, I saw this blurb in the school paper about an exchange program that's part of the study abroad office.

But what I wanted to find out at the booth was: it’s...um...a domestic exchange program, not studying abroad, but studying for a year somewhere else here in the United States.

But when I talked to the supervisor in the study abroad office, it turns out we are part of a... a group of universities throughout the US that does a domestic exchange program.

If the car you have leased is clearly unsatisfactory, you can always exchange it for another.

Researchers demonstrated that preliterate people, to keep track of the goods they produced and exchanged, created a system of accounting using clay tokens as symbolic representations of their products.

These goods were exchanged for finished products, mainly cloth and salt, from western cities.

The stocks of all the leading railroads were traded on the floor of the New York Stock Exchange during the 1850s.

There was only time for a brief exchange.

Where can I find the best exchange rate?