beltway

beltway
noun
  1. (US)a ring road
    (美)环形公路,环线
    ■(Beltway)[often as modifier]Washington DC, especially as representing the perceived insularity of the US government
    “环形路"(指美国首都华盛顿,因围绕华盛顿的环形公路而得名,喻美国政府的封闭性)
    conventional Beltway wisdom.
    美国政府因循守旧的见解。
英语宝典
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