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1
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blue line
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US
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In the context of transportation, the blue line typically refers to a specific subway or metro line.
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1
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2
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blue line
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United States
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Blue line commonly refers to a subway or metro line on public transportation maps.
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1
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3
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blue line
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United States
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In the context of public transportation, the blue line is a common designation for a specific subway or metro route.
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1
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4
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blue line
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United States
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In the United States, a blue line painted on the road often indicates support for law enforcement, particularly used by the 'Blue Lives Matter' movement.
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1
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5
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red line
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US
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In some Western countries, crossing a red line is seen as a clear violation or boundary and is not acceptable behavior.
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1
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6
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red line
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United States
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In the US and Western cultures, a red line on a document often signifies important information or a limit that should not be crossed.
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1
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7
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second line
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US
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Refers to the row of text in a verse of a song, often repeated in blues music
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1
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