Your gas bills should give a figure for your usage each quarter - but remember you use very little in the summer months, so you'll need to add up the total across all four quarters.
燃气费账单上显示的应是每个家庭每季度的使用量——但请记住，夏季的燃气使用很少，所以你需要将四个季度的燃气使用量加在一起。
World solar cell production reached a consolidated figure of 9.34 GW in 2009, up from 6.85 GW a year earlier, with thin film production accounting for 18% of that total.
2009年，世界太阳能电池产量总量达到了9.34兆瓦的综合数字，高于去年同期6.85万千瓦，与薄膜的总产量占全产量的18%。
World solar cell production reached a consolidated figure of 9.34 GW in 2009, up from 6.85 GW a year earlier, with thin film production accounting for 18% of that total.
2009年，世界太阳能电池产量总量达到了9.34兆瓦的综合数字，高于去年同期6.85万千瓦，与薄膜的总产量占全产量的18%。
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