bring about: To cause to happen.

The new government brought about economic reforms.

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bring back: Re-introduce.

Many worry that the government will bring back higher taxes.

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bring back: Cause to remember

Seeing his ex-wife bought back everything about their painful divorce.

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bring something out: Publish, Introduce.

I heard Microsoft are bringing out a revolutionary new computer next year.

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bring something out: Produce an effect

Drinking whiskey brings out the very worst in him. Don't give it to him.

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bring round: Help to regain consciousness.

He fainted but the doctor brought him round with a tot of whiskey.

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bring up: Care for and educate a child.

She had six children and she brought them all up in exactly the same way.

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bring up: Cause to be talked about.

Don't bring up his divorce! He is still very unhappy about it. Talk about anything but that!