grind up

动词

To reduce (something) to powder by grinding. (transitive) · You have to grind up the cardamom pods.
To dance in a sexually suggestive manner close to another person. (intransitive) · He's been grinding up on her.
To wear down on (someone); to be extremely draining or stressful; to cause burnout. (transitive) · This place will grind you up.
To skateboard on a surface or in a location. (transitive) · He's grinding up the skate park.

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