美国高中通常包括九到十二年级在内的四个年级的翻译：United States high school usually includes grades 9-12, four years of primary school 什么意思？中文翻译英文，英文翻译中文，怎么说？

青云英语翻译

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United States high school usually includes grades 9-12, four years of primary school

American High school usually includes nine to ten second year's four grades

The United States usually include high school grades 9 to 12 in the first grade 4 months

United States high school usually includes grades 9-12, four years of primary school