Cleaning the Sydney Harbour Bridge used to be a dangerous, dirty and laborious job. As soon as a team of workers, operating a sandblaster, reached one end of the iconic structure they had to start again to keep 485,000 square metres of steel pristine.
清潔雪梨海港大橋(Sydney Harbour Bridge)曾是一個又危險、又髒、又累的活。操作噴砂機的工人得在這座標誌性建築物上面來回來去的噴，才能確保這座48.5萬平方米的鋼結構大橋嶄新如初。
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