Englishfor English speakers
exchange
Verb
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Two people exchange two things when each person gives a thing to the other person. They can exchange two things, or they can exchange a thing for money.
The children can exchange toys so that each child has a new toy to play with.
exchange
Noun
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An exchange is the act of exchanging.
I did well in that exchange. Now I have three good new books, and I only paid a little money.
system
Noun
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A group of things that work together; a way of doing something.
This coloured paper is part of my system for keeping lists of people.
manager
Noun
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A manager is someone who manages or organizes people or things together.
Ask the manager of this project. He knows what to do next.
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A manager is a program that allows the user to control a part of the computer/software.
If a program is not responding, please use the task manager to end the program forcefully.