在加拿大的安大略省，高中生被要求做40个小时的志愿活动。
In the Canadian province of Ontario, high school students are required to do forty hours of volunteering.
气候变化正严重影响着位于加拿大安大略省西北部的一些湖泊的停留时间。
Climatic change is dramatically affecting the residence times of some lakes in northwestern Ontario, Canada.
我今年16岁，住在加拿大安大略省，患有先天性肌营养不良。
I am 16 years old and live in Ontario, Canada and have congenital muscular dystrophy.
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