核心畫面
One way to picture it: a blade so thin that it slides through hair without you feeling it — and so thin that there is almost no surface to stand on.
一片薄到幾乎沒有厚度的刀鋒。薄到什麼程度？薄到刮過皮膚時你幾乎沒感覺，毛就斷了。這個「薄」是這個字的靈魂——它既解釋…更多收起
一片薄到幾乎沒有厚度的刀鋒。薄到什麼程度？薄到刮過皮膚時你幾乎沒感覺，毛就斷了。這個「薄」是這個字的靈魂——它既解釋了為什麼刮鬍刀好用，也解釋了為什麼英文會拿它來形容處境：一條沒有寬度的邊，你根本站不穩。原始詞典資料6 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。
Razorname
- 1
A surname.
razornoun/ˈɹeɪzə/
- 1
A keen-edged knife of peculiar shape, used in shaving the hair from the face or other parts of the body.
- 2
Any tool or instrument designed for shaving.
- These are fellows who shun the three-, four- and five-blade contraptions and canned goops for an older mode of shaving that they insist remains the ideal: a straight razor or a safety razor with a double-edged blade, and a fine English cream lathered and applied with a badger-hair brush.
- The box was jam packed full o' gifts for each manjack of us: razors, aftershave, toothbrushes, an' books.
- 3
The sharp tusk of a wild boar.
- 4
human-sciencesphilosophysciencesA conceptual device that allows one to shave away unlikely explanations for a phenomenon.
- Occam's razor, Hanlon's razor
razorverb/ˈɹeɪzə/
- 1
To shave with a razor.
- He thought likewise, that what with razoring and tanning, and the change of his clothes, he was not likely to be recognised.
- Lord Tywin did not believe in half measures. He razored his lip and chin as well, but kept his side-whiskers, two great thickets of wiry golden hair that covered most of his cheeks from ear to jaw.
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。