单词	corrugation
释义	cor·ru·ga·tion (kôr′ə-gāshən, kŏr′-) n. 1. a. The act or process of corrugating. b. The state of being corrugated. 2. A groove or ridge on a corrugated surface.
随便看	rung runic run in run-in run in place run interference run into run into the ground run its course runlet runnel runner runner-up running running back running board running dog running gear running hand running knot running light running mate running noose running start running stitch

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