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.
清洁悉尼海港大桥(Sydney Harbour Bridge)曾是一个又危险、又脏、又累的活。操作喷砂机的工人得在这座标志性建筑物上面来回来去的喷，才能确保这座48.5万平方米的钢结构大桥崭新如初。
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