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To hotfoot it is to leave or go somewhere in a hurry, on your feet — you walk fast or you run. English speakers almost always put it after the verb: she hotfooted it to the station. Without it, the sentence can sound odd. It is informal, a little old-fashioned, and a little playful. You use it when the speed matters and you can picture legs moving, not when someone drives. There is also an adverb use (they left hotfoot) meaning in a rush, but students will meet the verb with it most. Though actually, hotfoot can also name a mean old joke — heating someone's shoe — but that is a different, rarer use, and it is not this sense. Here the hot is a picture: as if the ground is too hot to stand on, so you move.
趕緊跑；拔腿就跑
原始詞典資料4 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。
hotfootnoun
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The prank of secretly inserting a match between the sole and upper of a victim's shoe and then lighting it.
hotfootadj
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Moving with haste or zeal.
- Half the populace are idle, / Half are busy in a room; / All are gravebound from the cradle, / All are hotfoot for their doom.
hotfootadv
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Hastily; without delay.
hotfootverb
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To run (a distance).
- He hotfooted the four-and-a-half blocks across town to the New York Public Library on Fifth Avenue and checked out the books Patterson had mentioned—and everything else about China he could quickly think of.
- The Ford was shot up heavily, so Larkin hotfooted the last mile to Ewa. Once there, he took cover beneath a truck as unchallenged Zeros strafed the neatly parked MAG-21 aircraft and the base facilities.
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。