Tianjin is beautiful city in north of China.

A. a；a B. a；the C. the；不填 D.不填；the

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Some days, don’t you think, "Wouldn’t it be nice if the laundry would just do itself?” Self-cleaning clothes may sound crazy. But Australian researchers have found a way to make something like this possible!

A team at RMIT University in Melbourne, Australia, found a way to put special nanostructures (納米結(jié)構(gòu)) into clothing, which can then clean the clothes. When sunlight hits the nanostructures, they break down the dirt and stains (污漬) that don’t belong on your clothes.

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