How native speakers pronounce “concentrate”

"We think Gillian has a learning disorder." She couldn't concentrate; she was fidgeting. I think now they'd say she had ADHD.

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their brains, their bodies, and behavior suffer. They can't concentrate. Their attention plummets,

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Perhaps you're not as patient with your loved ones. You might find it hard to concentrate or stay alert, or you might find it difficult to remember things,

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for the sake of technological progress. We have no choice but to concentrate power to keep ourselves safe from possible risks.

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which is when our goal is to do something as best as we can, to execute. Then we concentrate on what we have already mastered and we try to minimize mistakes.

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