In the late 1700s James Watt designed an efficient and commercially viable steam engine that was soon applied to a variety of industrial uses as it became cheaper to use.(18世纪晚期，詹姆斯·瓦特设计了一种高效的、商业上可行的蒸汽机，随着它的使用成本越来越低，它很快被应用于各种工业用途。)
Random 9-cell / 85 watt-hourbattery(随机9芯/85瓦时电池)
Three years ago AMI sold a 25-watt fuel cell weighing two kilograms.(三年前AMI销售的25瓦燃料电池重2公斤。)
Current modules have 10 percent efficiency and an installed system cost of about $4 per watt.(现在通用的组建效率约为10%系统安装费用需要4元每瓦。)
Coal currently costs approximately 7 cents a watt, compared to 22 cents for solar.(用煤发一瓦特电的当前成本约为7美分，而用太阳能发一瓦特电为22美分。)
The expedition was a disaster, and Watt Raleigh was killed in a battle with Spaniards.(这次探险最后变成一场灾难，瓦特·雷利在与西班牙人的交战中不幸阵亡。)
A decent 60-watt incandescent costs less than a dollar.(一个好看的60瓦白炽灯还不到1美元。)
The technology is cheap and could lower the cost per watt of solar power.(这种技术成本低廉，可以降低每瓦特太阳能电力输出成本。)
A vote for the Watt amendment is a vote for more secret bailouts.(投票给瓦特修正案就是投票给更多的秘密救助。)
40-watt and 25-watt bulbs, which are most widely used, will go in 2012.(目前人们普遍使用的40瓦和25瓦的白炽灯泡将可使用到2012年。)
