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| 21. | They scraped the old paint off the door before they put new paint on. |
| 他们在门上刷新油漆前，刮掉了旧油漆。 |
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| 22. | He ripped the wallpaper away from the wall before beginning to paint the room. |
| 他在油漆房间之前，先把墙纸撕掉。 |
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| 23. | The assessment of profile grades of steel surface before application of paint and related products-Comparator |
| GB/T13288-1991涂装前钢材表面粗糙度等级的评定(比较样块法) |
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| 24. | Burn the old paint off before re-painting the door. |
| 先把门上的旧漆烧掉再上新漆. |
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| 25. | The plaster will have to dry out before you can paint the room. |
| 待房间的灰泥乾后才可粉刷. |
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| 26. | The surface of the cupboard should be thoroughly sanded down before you apply any paint. |
| 应该先用砂纸把橱子表面全部磨光，然后再上漆。 |
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| 27. | The surface should be thoroughly sanded down before you apply any paint. |
| 应该先用砂纸把表面全部磨光，然后再上漆。 |
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| 28. | It will be necessary to chip away all the paint before applying a new layer. |
| 涂新漆以前，必须把原来的漆全铲掉。 |
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| 29. | The assessment of profile grades of steel surface before application of paint and related products—Comparator |
| GB/T13288-1991涂装前钢材表面粗糙度等级的评定(比较样块法) |
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| 30. | The surface of the cupboard should be thoroughly rubbed down before you apply any paint. |
| 应该先用砂纸把橱子表面全部磨光，然后再上漆。 |
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