On completion of cleaning, all surfaces are to be free of visible dirt, bacterial and residue cleaner leaving a clean appearance.
在清洁完成后，一切外表都确保整洁，不应有明显的灰尘、细菌和清洁剂残留物出现。
He throws a handful of dirt on the bridge and that makes it visible.
他丢了一把垃圾在桥上，而且使它容易看得见。
Steel surface should be no visible oil, dirt, scale, rust and paint coating and other debris should as far as possible eliminate, any attachments should be strong.
钢材表面应无可见油脂、污垢、氧化皮、铁锈和油漆涂层及其它杂物应尽可能除去，任何附着物均应是牢靠的。
Steel surface should be no visible oil, dirt, scale, rust and paint coating and other attached objects, the surface should be showed homogeneous metal color.
钢材表面应无可见的油脂、污垢、氧化皮、铁锈和油漆涂层等附着物，该表面应显示均匀的金属色泽。
Steel surface should be no visible oil, dirt, scale, rust and paint coating attachments, any markings should be only slight discoloration of dot or stripes.
钢材表面应无可见的油脂、污垢、氧化皮、铁锈和油漆涂层附着物，任何残留痕迹应仅具点状或条纹状的轻微色斑。
Steel surface should be no visible grease and dirt, and there is no attachment not firm scale, rust, paint and other impurities (water soluble salt and welding residue).
钢材表面应无可见的油脂和污物，并且没有附着不牢的氧化皮、铁锈和油漆涂层及其它杂质（水溶性盐和焊接残渣）。
The small dirt road was barely visible.
这条狭窄荡灰的道路几乎是根本看不见。
The small dirt road was barely visible.
这条狭窄荡灰的道路几乎是根本看不见。
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