[3] 经济分析局,“表 2.2。美国按地区和国家划分的国际商品贸易,经季节性调整的明细。” (https://apps.bea.gov/iTable/?ReqID=62&step=2#eyJhcHBpZCI6NjIsInN0ZXBzIjpbMiw2LDZdLCJkYXRhIjpbWyJUYWJsZUxpc3QiLCIzMTAwMSJdLFsiRmlsdGVyXyMxIixbIjEiLCIy Il1dLFsiRmlsdGVyXyMyIixbIjAiXV0sWyJGaWx0ZXJfIzMiLFsiMjEiLCI0OSIsIjc3Il1dLFsiRmlsdGVyXyM0IixbIjAiXV0sWyJGaWx0ZXJfIzUiLFsiMCJdXV19) 经济分析局,“表3.2.美国国际服务贸易按地区和国家划分,经季节性调整的明细。”(https://apps.bea.gov/iTable/?ReqID=62&step=2&_gl=1*o6r71c*_ga*OTE2ODYxMTE5LjE3MTUwNzA0OTk.*_ga_J4698JNNFT*MTcxNTE0ODA1MC4zLjEuMTcxNTE0ODY 0NC41NS4wLjA.#eyJhcHBpZCI6NjIsInN0ZXBzIjpbMiw2LDZdLCJkYXRhIjpbWyJUYWJsZUxpc3QiLCIzMTAwMyJdLFsiRmlsdGVyXyMxIixbIjEiLCIyIiwiMyJdXSx (bIkZpbHRlcl8jMiIsWyIwIl1dLFsiRmlsdGVyXyMzIixbIjIxIiwiNDkiLCI3NyJdXSxbIkZpbHRlcl8jNCISWyIwIl1dLFsiRmlsdGVyXyM1IixbIjAiXV1dfQ==)