Reccie – check out a route beforehand.  Abbreviation of the word reconnoitre

4-booter – a way of grading walks.  This describes a long and possibly difficult route; grade one is easiest

Scambling – using your hands as well as your feet

Take a constitutional – a short walk, taken daily for a sense of well-being¹

Amble² – a very slow walk, probably down the street or in the park -with no prescribed route, or direct destination

译文：

Reccie（侦查）——事先检查路线。Reccie是reconnoitre的缩写。

4-booter（4级）——步行分级的一种方式。4级表示路途长而艰险，1级难度最低。

Scambling——手脚并用。

Take a constitutional——短途的步行，有利于身体健康的每日必修课。

Amble （溜达）——极为缓慢的步行，可能是轧马路或者在公园里溜弯儿——没有固定的路线或是直接的目的地