American Viticultural Area (AVA): A delimited, geographical grapegrowing area that has officially been given appellation status by the Alcohol and Tobacco, Tax and Trade Bureau (TTB). Two examples of AVAs are Napa Valley and Sonoma Valley.
美国葡萄原产地（AVA）：由美国酒精及烟草税务贸易局（TTB）官方命名的葡萄生长地理分界区。AVA 包括著名的纳帕山谷和索诺玛山谷。
