(美国)一名前电视节目主持人耗时六年、用600万根牙签搭建成了世界多个著名建筑。
A former television presenter has spent six years building famous landmarks - out of six million toothpicks.
全球已建成超过1.9万家工厂，其中大部分位于沿海国家。
More than 19,000 factories have been built around the world, mostly in coastal countries.
相形之下，只需不足1,000万美元，就能建成一套可以改变整座城市的自行车分享系统。
With bike sharing you can get a city-changing system for less than $10 million.
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