The DOE report found that extended daylight saving time reduced annual U. S. electricity consumption by about half a percent during each day of extended DST.
能源部的这份报告显示，夏时制的延长使美国全年电力消耗降低约半个百分点。
Japan stands virtually alone among rich countries in not using daylight-saving time (DST), or summer time.
而在所有发达国家当中，日本几乎是唯一一个不使用日照利用时间(DAT)，或曰夏令时的国家。
Today about 70 countries use Daylight Saving Time (DST).
今天约有70个国家使用夏令时间(在DST)。
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