http://www.nrcan.gc.ca/energy/infrastructure/5895 N- d U/ y) d9 a: U# K: i嗯。。加拿大有12家炼油厂。。。 There are three main refining centres in Canada (Edmonton, Sarnia and Montreal), but most provinces have at least one refinery.% z& Z6 Q" h- T/ j1 F5 S* I7 ~1 P