用兩隻腳走路的人／給走路的人用的
這一支就是核心畫面的字面用法：畫面裡那個走路的人本身，以及這個城市為他準備的東西。
person walking · noun · A2
a person who is walking, especially in a place with cars and roads.
行人
核心畫面
Someone crossing the world on their own two feet — no horse, no car, no engine. Just a person walking, at walking speed, level with the ground.
pedestrian 的核心畫面可以想成「一個人用自己的兩隻腳在路上走」——沒有馬、沒有車、沒有引擎，就是一步一步、…更多收起
pedestrian 的核心畫面可以想成「一個人用自己的兩隻腳在路上走」——沒有馬、沒有車、沒有引擎，就是一步一步、貼著地面前進。這個畫面同時給了兩樣東西：走在路上的那個人（行人），以及「用走的」這種最普通、最不華麗的移動方式。From the word’s history
From Latin pedester (pedestris) 'on foot', from pes 'foot' — a word coined in contrast with equester 'on horseback'. English borrowed the figurative branch first: 'pedestrian' meant 'prosaic, dull' of writing from 1716 (plain prose, not versified); the noun 'a walker' only appears in 1793. Source: Online Etymology Dictionary, entry 'pedestrian'.
拉丁文 pedester 的意思是「用走的」，由 pes（腳）而來，而且它天生就是拿來跟 equester（騎馬的）對照的。走路的人和騎馬的人在羅馬人眼中是兩種身分、兩種排場，所以「用走的」很早就帶著「平實、沒有裝飾」的味道。英文其實先借走了這條比喻線：1716 年 pedestrian 先當形容詞，用來說文章寫得平鋪直敘、不像韻文那樣講究；一直到 1793 年才出現「行人」這個名詞用法。資料來源：Online Etymology Dictionary（etymonline.com）「pedestrian」條。
Online Etymology Dictionary (etymonline.com), entry 'pedestrian' — Latin pedester 'on foot' (vs equester 'on horseback'); adj. 'prosaic, dull' 1716, noun 'walker' 1793
Two branches
平平的、不出色的
拉丁文裡「用走的」本來就是拿來對照「騎馬的」：騎馬有排場，走路很平常。這條線英文其實比「行人」還早借進來（1716 年先有這個形容詞用法），所以它不是後來硬掰的比喻，而是同一顆種子的另一枝。
dull, unimaginative · adjective · B2
ordinary and not interesting, with little imagination.
平淡乏味
原始詞典資料5 筆記錄
以下是外部詞典記錄的用法，原文照列，我們還沒有寫成教學內容。上面的說明才是我們自己寫的；有些用法可能上面已經講過了。
pedestrianadj/pəˈdɛstɹiən/
- 1
Of or intended for those who are walking.
- pedestrian crossing
- pedestrian zone
- 2
Ordinary, dull; everyday; unexceptional.
- His manner of dress was pedestrian but tidy.
- a pedestrian life
- 3
dancedancinghobbiesPertaining to ordinary, everyday movements incorporated in postmodern dance.
- The choreographer prefers pedestrian movements.
pedestriannoun/pəˈdɛstɹiən/
- 1
A walker; one who walks or goes on foot, especially as opposed to one who uses a vehicle.
- […] how the troops came marching out for evening exercise under Captain Preston; how pedestrians and street urchins taunted them, shouting "Lobsters," "Bloody-backs," and flinging snow-balls, turnips, […]
- 2
datedAn expert or professional walker or runner; one who performs feats of walking or running.
資料來源：英文維基詞典 English Wiktionary（CC BY-SA 4.0）。 原文照列，未經改寫。