你改变你的专业，并且你在此之前从来没有学习过这个专业。那么你在美国要如何学习它呢？
You have changed your major, and never studied it before. How will you study it in America?
这个产品从来没有改变，它为人们带来疾病，使人们变得不快乐。
A product that never improves, that causes illness, and makes people unhappy.
这个产品从来没有改变，它为人们带来疾病，使人们变得不快乐。
A product that never improves, that causes illness, and makes people unhappy.
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