an up grade

• n. 上坡

an up grade的用法和样例：

例句

用作名词 (n.)

1. He pedaled his way up the slope.
   他骑着脚踏车上坡。
2. Soon the truck came into sight around a bend and on an upgrade.
   不一会卡车就出现在一个拐弯和上坡处。