求翻译：　　美国校车历史悠久 管理有多严格？是什么意思？

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The American School Bus has a long history management is more strict?

　　May know the school bus from preceding text everybody no matter from the stature as well as the body weight all is extremely big, a such heavy school bus its oil consumption definitely is an everybody attention matter, but edited looks for very many related websites not to introduce these, but kne

　　United States school bus has a long history of how strict is the management?