a knight of the road

• n. 流动推销员；流浪汉

a knight of the road的用法和样例：

例句

用作名词 (n.)

1. A tramp came to the door and asked for food.
   一个流浪汉来到门前讨饭吃。
2. The bum wore a tattered sweater and ripped pants.
   那个流浪汉的运动衫和裤子破旧褴褛。