1.He was able to sell millions of models because he "mass-produced"them.
2.That is, he made a great many cars of exactly the same type.
3.By the age of 29,in 1892,he had built his first car.
4.This car proved to ba so popular that it remained unchanged for great Motor Company.
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不介意我改一改你的英文1.He was able to sell millions of models because of the mass production.因为大量生产,因此他卖出了上万俩模型2.That is, he made a great deal of same type of cars.既是他作了非常多的同款汽车