to toil up a mountain

• 吃力地爬山

to toil up a mountain的用法和样例：

例句

1. Heel after Heel, we climbed the mountain.
   我们摩肩接踵地爬山。
2. She felt as though she were stumbling up a mountain.
   她觉得自己好象在跌跌撞撞地爬山。