我主修生物。
I want to major in biology because I have long wondered about the origin of life.
我想要主修生物学，因为我一直在思考生命的起源。
'my uncle once urged me to choose mechanical engineering or auto engineering as my major,' Yu said. 'I chose biotechnology out of my interest in biology class in high school.
于敏说，我舅舅当初曾劝我学机械工程或自动化方面的专业，但我根据自己对高中生物课的兴趣选择了生物技术专业。
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