用二座位取代三座位 replace three-seat benches with double-seats 更换热水炉 replace water heaters 换手提电话 replaced their handsets ..
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The authors walk readers through the investment decisions made when the average American house decides to replace a hot-water heater, and why markets are currently structured to discourage buying more efficient heaters.
ECONOMIST: A look at noteworthy articles from the business journals
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