How To Use Flow away In A Sentence

• There's a channel in the middle of the old street to help rainwater flow away.
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• The pipe seems to be plugged up and the water can't flow away.
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• There's a channel in the middle of the old street to help rainwater flow away.
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• There was a block in the pipe and the water couldn't flow away.
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• There was a block in the pipe and the water couldn't flow away.
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