flat curve

• 平直曲线,平坦的弯道

flat curve的用法和样例：

例句

1. The highway banks sharply on this curve.
   高速公路在这个弯曲处明显地形成从内侧至外侧向上倾斜的弯道。
2. Be sure to slow your car down as you approach that dangerous curve.
   当你驶近那危险的弯道时，千万要放慢车速。