hour [ˈaʊə] 名词
单语范例（未经PONS编辑处理）
It can operate at an average speed of 2.5 mph for 42 miles with one 80 watt-hour lithium polymer battery weighing 1.2 pounds.
en.wikipedia.org The important metric is of course $$$/watt-hour and environmental impact.
www.gizmag.com At the completion of the cycle, the dials would be misaligned like the pointers in a traditional watt-hour meter.
en.wikipedia.org Thus, a joule is a watt-second, so 3600 joules equal a watt-hour.
en.wikipedia.org Two 1,000 watt-hour batteries stored power for spacecraft operations.
en.wikipedia.org