When it comes to mansions, there's big, and then there's massive. Sprinkled across the county are some homes that have become landmarks due to their history and their size. These are the mega-mansion of America, and one of the largest is right here in Michigan. ...
卡特彼勒公司的英文简介,给你一段资料作为参考,复制粘贴的就不要来了! Caterpillar Inc.(NYSE:CAT),also known as "CAT",designs,manufactures,markets and sells machinery and engines and sells financial products and insurance to customers via a worldwide dealer