unfasten
unfasten — 動詞
1. to make something that was closed or fixed become open or loose — like undoing a
解開；鬆開
將扣住或固定的部分打開或放鬆
to make something that was closed or fixed become open or loose — like undoing a seatbelt or unbuttoning a shirt — or for something that is closed or fixed to become open or loose by itself.
Before getting out of the taxi, Yasmin unfastened her seatbelt and picked up her bag.
Yasmin 在下計程車前解開安全帶，拿起了她的包包。
transitive: unfasten + [object] (seatbelt)
Linh carefully unfastened the tiny buttons on her baby's jacket before bath time.
Linh 在洗澡前小心地解開寶寶外套上的小鈕扣。
The clasp on Wei's necklace unfastened during the party, and the pearl rolled under the table.
Wei 的項鍊扣環在派對上鬆開了，珍珠滾到桌子底下。
Kitchen scissors are useful for unfastening the tight plastic ties on packaging.
廚房剪刀很適合用來剪開包裝上的緊塑膠繩。
The buckle on Gabriel's bag had unfastened during the hike, scattering books across the trail.
Gabriel 的背包扣環在健行時鬆脫，書本散落在小徑上。
- undo
broader in scope — 'undo' works for knots, zips, buttons, and even digital actions
- loosen
less complete — 'loosen' means to make less tight without necessarily fully opening
- release
more formal — 'release' is typical for catches, locks, and safety mechanisms
- unbuckle
more specific — only applies to objects closed with a buckle
文法句型
unfasten + [object]
[fastening] unfastened
come unfastened
用法筆記
Can be used both transitively (someone unfastens a fastened object) and intransitively (the fastening comes undone by itself or accidentally). The pattern 'come unfastened' is common for describing an accidental or unnoticed loosening.