In a perfectly controlled and totally sterile environment — uncontaminated by dirt, insects or fresh air — Japanese scientists are developing a new way of growing vegetables.

日本科学家正在开发一项蔬菜种植的新方法：整个环境完全由人工控制而且完全无菌，也就是说，这是一个既没有灰尘也没有昆虫和新鲜空气的环境。

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In China, basic things such as uncontaminated baby formula, clean air, top-quality schools and private hospitals are luxuries, out of reach of many members of the middle class.

WSJ: An Unhappy Middle in the Middle Kingdom