| 释义 | self-locking adjective
 (alsoselflocking)uk /ˌselfˈlɒk.ɪŋ/ us /ˌselfˈlɑː.kɪŋ/
 A self-locking device locks itself automatically:
 It was a self-locking door with no handle and I didn't have the key.
 Gates should be self-closing as well as self-locking.
 Workers became trapped in the high-rise's stairwell behind self-locking stairwell doors.
 The property was designed as a secure complex, with perimeter fencing on all sides and selfclosing and selflocking gates and doors.
 In the past, engineers had favoured a self-locking nut, but this time they opted to use a different type of nut.
 SMART Vocabulary: related words and phrases
 Locking and bolting
 bar
 batten
 bolt
 handcuff
 hermetically
 latch
 lock
 lock (something) up
 lock someone out
 lock something away
 lock something in
 lockable
 love lock
 manacle
 padlock
 relock
 shut
 shut someone away
 under lock and keyidiom
 unlockable
 
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