close up

/kləʊzˈʌp/ 动词

To close (remove a gap) completely or fully. (intransitive) · Some flowers close up at night to stay protected from the cold.
To move nearer together so that a gap is removed. (intransitive) · The crowd closed up and I couldn't get through to the train.
To enclose, confine. (transitive)
To shut a building or a business for a period of time. · We finally managed to close up the shop for the night at about 10 o'clock.· The car factory has closed up for the August holidays.
Of a cut or other wound: To heal. (intransitive) · With stitches, the cut should close up in a week to ten days.
To become less 'open' or communicative; to shrink back. (intransitive) · to close up emotionally

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