- 1解開、鬆開（扣子、安全帶、繩子等）
To open something that was held closed — a button, a belt, a zip, a rope, a lock, a clip. means to join two things so they stay shut; un- undoes it.
To open something that was held closed打開原本被扣住、關住的東西 a button, a belt, a zip, a rope, a lock, a clip像釦子、皮帶、拉鍊、繩子、鎖、夾子 Fasten Fasten means to join two things so they stay shut意思是把兩樣東西接在一起讓它們保持關閉 un- undoes it而un-就是把它打開
So you your seatbelt at the start of a flight and unfasten it at the end.
So所以 you fasten your seatbelt at the start of a flight你在飛機起飛前fasten安全帶 and unfasten it at the end降落後再unfasten它
The word is calm and careful. It is what you say when the opening is deliberate and gentle — unfastening a necklace, unfastening a child's coat. If something is ripped open, you would not use this word.
The word這個字 is calm and careful給人平靜、謹慎的感覺 It is what you say when the opening is deliberate and gentle是在打開的動作是刻意、輕柔的時候會用的字 unfastening a necklace, unfastening a child's coat像unfasten項鍊、unfasten小孩的外套 If something is ripped open如果東西是被撕開的 you would not use this word你就不會用這個字
In everyday speech, English speakers usually reach for a more specific verb: unbutton a shirt, unzip a bag, a rope, take off a belt, or just "undo" — undo is the most common of all in British English, and covers nearly everything unfasten covers.
In everyday speech在日常口語裡 English speakers usually reach for a more specific verb英文使用者通常會用更具體的動詞 unbutton a shirt, unzip a bag, untie a rope, take off a belt, or just "undo"像unbutton襯衫、unzip包包、untie繩子、take off皮帶，或乾脆說undo undo is the most common of all in British English而undo在英式英文裡是最常用的 and covers nearly everything unfasten covers幾乎涵蓋了unfasten所能涵蓋的一切
Unfasten survives strongly in one place: on planes and in cars, in the announcement "please keep your seatbelts ," and so "unfasten your seatbelt" sounds completely natural to everyone. Elsewhere it feels a little careful or written.
Unfasten Unfasten survives strongly in one place在一個地方還牢牢地留著 on planes and in cars就是在飛機和車上 in the announcement "please keep your seatbelts fastened,"在廣播詞「please keep your seatbelts fastened」裡 and so "unfasten your seatbelt" sounds completely natural to everyone所以「unfasten your seatbelt」對每個人來說都很自然 Elsewhere在其他地方 it feels a little careful or written它就顯得有點刻意或書面
core核心畫面
組成un- (undo the action) + fasten (to join or fix so it stays shut). Note that this un- is not "not" — it means "reverse it," the same un- as in unlock and untie.
原始詞典資料2 筆記錄
以下是外部詞典記錄的用法，摘錄並精簡格式，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。
unfastenverb/ʌnˈfɑːs(ə)n/
- 1
To detach from any connecting agency or link; to disconnect.
- He doth unfasten so and shake a friend.
- 2
To come unloosed or untied.
摘錄自 英文維基詞典 English Wiktionary，已精簡格式；依 CC BY-SA 4.0 授權使用，改動後的內容同樣以此授權提供。