back sloper

例句：

1. 1. The car was driving slowly along the back slope of the hill.
   汽车沿着山坡的背面缓慢行驶。
2. 2. The back sloper had to carry all the heavy boxes up the steep incline.
   背坡手不得不把所有的重箱子搬上陡峭的斜坡。
3. 3. The back sloper had to wait for the others to finish their task before starting his own.
   背坡手必须等到其他人完成任务后才开始自己的工作。