麦克法兰把目光投向了日本，彼时日本也在发展大城市，同样缺乏卫生设施。
Macfarlane looked to Japan, which was also developing large cities about the same time, and also had no sanitation.
这有利于大城市的健康发展。
这在当时手机市场持续增长，以及拥有大量科技发烧消费者的大城市蓬勃发展的大背景下运作的很好。
This worked brilliantly when the overall market for smartphones was growing, and the richest cities, with the largest number of tech-aware consumers, were booming.
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