腳下的那塊板（名詞）
這一族就是核心畫面本身，只是換到不同的機器上：同一塊「給腳踩的板」，裝在腳踏車、汽車、鋼琴裡各做各的事。
bicycle pedal · noun · A2
one of the two parts of a bicycle that you push round with your feet to make the bicycle move forward.
踏板（腳踏車的）
核心畫面
Picture a flat plate made for a foot. Your hands are busy or too weak for the job, so the machine gives your foot a place to push — and that push goes straight into the machine and turns into movement, power, or a change in sound. Everything this word does comes from that one plate under a foot: the thing itself (bike, car, piano), the act of pushing it round, and the phrase for pushing it as hard as it will go.
一塊「為腳準備的板子」。你的手正忙著、或者手根本沒那麼有力，於是機器在腳的位置放了一塊板讓你踩下去——而這一踩會直接…更多收起
一塊「為腳準備的板子」。你的手正忙著、或者手根本沒那麼有力，於是機器在腳的位置放了一塊板讓你踩下去——而這一踩會直接傳進機器裡，變成前進、變成動力，或者變成聲音的改變。這個字所有的用法都是從「腳下那塊板」長出來的：板子本身（腳踏車、汽車、鋼琴各有各的板）、踩它這個動作、還有「踩到不能再踩」那個說法。腳一直是重點——所以 pedal 講的永遠是那條從腳底通到機器內部的力量路徑。From the word’s history
Latin 'pes / ped-' meaning 'foot' — the same root behind pedestrian and pedicure; a pedal is literally the foot-part of a machine.
來自拉丁文 pes / ped-「腳」，跟 pedestrian（行人）、pedicure（腳部保養）同源。所以 pedal 字面上就是機器上「屬於腳的那個部件」——記住這個 ped- 就是腳，這一族字都會鬆開來。
Online Etymology Dictionary (etymonline), entry 'pedal'
Three branches
踩到底＝全力（片語）
把核心那塊板推到極限：踩到不能再踩，於是這個動作本身變成「全力以赴」的說法。
put the pedal to the metal (drive fast) · noun · B2
used in the phrase 'put the pedal to the metal', which means to drive a car, truck, or other vehicle very fast by pressing the accelerator all the way down.
油門踩到底；開得飛快
踩踏板這個動作（動詞）
從名詞的板子轉成動作本身：英文常常直接把工具的名字拿來當動作用，pedal 就是「做那塊板該做的事」。
push the pedals round · verb · B1
to turn or push the pedals of a bicycle or another machine round with your feet.
踩踏板
原始詞典資料8 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。
pedalnoun/ˈpɛdəl/
- 1
A lever operated by one's foot that is used to control or power a machine or mechanism, such as a bicycle or piano.
- There are three pedals on manual cars, two on automatics.
- A piano usually has two or three pedals.
- 2
medicinesciencesan orthopedic structure or a footlike part.
- 3
entertainmentlifestylemusicAn effects unit, especially one designed to be activated by being stepped on.
- 4
equestrianismhobbieshorsesA stirrup.
- 5
entertainmentlifestylemusicThe ranks of pipes played from the pedal-board of an organ.
- A small organ commonly has only one or two ranks on the pedal.
pedalverb/ˈpɛdəl/
- 1
To operate a pedal attached to a wheel in a continuous circular motion.
- to pedal one's loom
- 2
To operate a bicycle.
- He was out of breath from pedalling up the steep hill.
- In the 1890’s “women were behind the stove,” he relates. But they cycled, too. “And they had difficulty pedalling bicycles with ankle-length skirts. “At the time,” Taylor said, “the most sinful thing a woman could do was to show light between her legs. “The original culotte was designed by a LAW member’s wife. The churches (in the East) termed this bepantsed female activity of biking “sinful bicycling,” he noted.
pedaladj/ˈpɛdəl/
- 1
Of or relating to the foot.
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。