1·Many traditionally white estates, such as Castle Vale, are out-of-town settlements built to cope with slum clearances after the war.
许多传统白人地区，例如谷堡区，是为了解决战后贫民区清理问题而在乡下建立的居民点。
2·Vale is the world's second largest mining company and the planet's biggest iron ore producer.
作为世界第二大矿业公司，“谷”也是全球最大的铁矿石出产地。
3·Most outlying estates have not had Castle Vale's makeover.
大多数偏远地区还没有像谷堡区那般改头换面。
4·Although it is part of a city that, within the next couple of decades, will be more than half black and Asian, over 90% of Castle Vale's residents are white.
在今后的20年内，这个城市半数以上的居民将会是黑人和亚洲人，尽管谷堡区是该城市的一部分，但超过90%的居民是白人。
5·Several issues of power quality are presented, including harmonics, reactive power, three phase unbalance, large difference between peak load and vale load, voltage disturbance and so on.
第一章简单介绍了目前电网存在的几种问题，包括谐波问题、无功问题、三相不平衡问题、用电峰谷差过大的问题以及电压异常、断电问题等；