| I | roughen |
|---|---|
| you | roughen |
| he/she/it | roughens |
| we | roughen |
| you | roughen |
| they | roughen |
| I | roughened |
|---|---|
| you | roughened |
| he/she/it | roughened |
| we | roughened |
| you | roughened |
| they | roughened |
| I | have | roughened |
|---|---|---|
| you | have | roughened |
| he/she/it | has | roughened |
| we | have | roughened |
| you | have | roughened |
| they | have | roughened |
| I | had | roughened |
|---|---|---|
| you | had | roughened |
| he/she/it | had | roughened |
| we | had | roughened |
| you | had | roughened |
| they | had | roughened |
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单语范例（未经PONS编辑处理）
A variant was to use a slightly roughened steel sheet atop the cover sheet, producing a laminate with a matte surface.
en.wikipedia.org Spores are elliptical, with a finely roughened surface, measuring 810 by 56.5 m.
en.wikipedia.org Characteristically it forms chrysocystidia and rather large, finely roughened, violaceous basidiospores each with a poorly defined germ pore.
en.wikipedia.org If a previous fresco was being painted over, the surface would be roughened to give a key.
en.wikipedia.org The trunk is buttressed at the base and has mainly smooth, or slightly roughened, dark brown bark.
en.wikipedia.org 互联网提供的例句（未经PONS编辑处理）
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www.heidelberg.com "The spine preparation consisting of milling, roughening, and subsequent powder removal enables very clean and durable adhesive binding," says Bühl.
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"Die Rückenbearbeitung aus Fräsen, Aufrauen und anschließendem Staubentfernen ermöglicht sehr saubere und haltbare Klebebindungen", berichtet Bühl.
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www.toko.ch Use sand paper to roughen the kick zone and remove dust with Base Tex.
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Abstosszone mit Sandpapier aufrauen und Staub mit Base Tex entfernen.
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www.fis.uni-bonn.de If air masses sink during the undulations, they roughen the surface of the water. In the satellite image, this section of the water surface is darker than the smooth surface between the wave troughs.
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Sinken die Luftmassen in der Wellenbewegung ab, rauen sie die Wasseroberfläche auf, welche dann auf dem Satellitenbild dunkler erscheint als die glatte Wasseroberfläche zwischen den Wellentälern.
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www.toko.ch Use sand paper to roughen the kick zone and remove dust with Base Tex.
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Abstosszone mit Sandpapier gut aufrauen und Staub mit Base Tex entfernen.
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www.toko.ch Use sand paper to roughen the kick zone and remove dust with Base Tex.
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Abstosszone mit Sandpapier aufrauen und Staub mit Base Tex entfernen ( wie GripWax ).
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