| 释义 |
switch·backBrE /ˈswɪtʃbæk/NAmE /ˈswɪtʃbæk/ nouna road or railway/railroad track that has many sharp bends as it goes up a steep hill, or one that rises and falls steeply many times （公路或铁路坡道上的）之字形路线；（公路或铁路的）不断起伏的路线(NAmE) a 180 degree bend in a road that is going up a steep hill （陡坡路上的）急转弯，180 度的转弯(old-fashioned, BrE) = roller coaster |