求翻译：美国汽车工业自亨利福特1907 年发明T型车及首创流水线生产方式以来, 经过长期的竞争和兼并, 完全由三大汽车公司控制着, 它们是通用汽车公司、福特汽车公司和克莱斯勒汽车公司。是什么意思？

U.S. auto industry since 1907, Henry Ford invented the Model t and since the first assembly line production, after long-term competition and mergers, completely controlled by the Big Three auto companies, General Motors, Ford Motor Company and Chrysler Corporation.

The American automobile industry since 1907, Henry Ford invented T car and first production pipeline, and after long-term competition and mergers, the 3 largest automotive company that they are general Motors Corporation, Ford Motor Company and Chrysler Motor Company.

The American automobile industry in 1907 has invented T Che Ji since Henry Ford to originate the production-runs way, passes through the long-term competition and the annexation, is controlling completely by three big car companies, they are General Motors, the Ford Motor Company and the Chrysler Co

United States auto industry since Henry Ford invented in 1907 since the model t and the first assembly line production, after a long period of competition and mergers, are entirely controlled by the big three companies, namely General Motors company, Ford Motor Company, and Chrysler.

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