In the United States, the western state of California has the nation's toughest environmental regulations when it comes to air quality at the ports.

针对海港城市的空气清洁问题，美国西岸的加利福尼亚州制订了全国最严格的环保法规。

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The best-known fault in North America is the San Andreas fault in the state of California in the United States.

北美洲最著名的断层是位于美国加利福尼亚的圣安德烈亚斯断层。

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Tecsun is a well-know wood-frame house builder located in the state of California in the United States.

德胜洋楼是一家著名的木结构住宅建筑商，总部在美国加州…

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In 1864, a United States senator called for legislation to give the Yosemite Valley to the state of California as a public park.

VOA: special.2009.01.07

The ceremony was held under the pine trees with Stumpy saying the simple works: "I proclaim you Thomas Luck, according to the laws of the United States and the state of California, so help me God."

VOA: special.2009.06.06

Cohen : Despite all of its other problems, California is the most energy efficient state in the United States.

FORBES: Sustainability Lessons for the Big Apple