- [usually plural]
one of a pair of wooden or metal covers that can be closed over the outside of a window to keep out light or protect the windows from damage 活动护窗；百叶窗 
to open/close the shutters 打开／关上护窗 They explored, throwing open the shutters in each of the big rooms. 他们探索着，打开了每个大房间的百叶窗。 - (British English, figurative)
More than 70 000 shopkeepers have been forced to put up the shutters (= close down their businesses) in the past year. 去年，有 7 万多家商店被迫关了门。
Extra ExamplesTopics Houses and homesc1, Buildingsc1Daylight was filtering through the shutters when he woke up. 他醒来时阳光透过百叶窗射进来。 He threw open the shutters to cool the room. 他拉开百叶窗让房间进点儿凉风。 She could be seen waiting for him behind half-closed shutters. 能看见她在半开的百叶窗后等着他。 The store had put up the shutters for the night. 夜幕降临，商店打烊了。
Oxford Collocations Dictionaryadjective- closed
- open
- metal
- …
- have
- fling open
- fold back
- …
- be down
- come down
- behind shutter a/the
- through shutter a/the
the part of a camera that opens to allow light to pass through the lens when you take a photograph （照相机的）快门 the quiet click of the shutter 快门轻轻的咔嗒声
Extra ExamplesYou will need a fast shutter speed to photograph racing. 拍赛跑照片需要较高的快门速度。 As the princess approached you could hear hundreds of camera shutters clicking. 随着公主的走近，你能听到几百架相机快门咔嚓作响。
Oxford Collocations Dictionaryadjective- camera
- click
- press
- click
- speed
- button
- release
- …
Idioms
bring/put down the shutters
to stop letting somebody know what your thoughts or feelings are; to stop letting yourself think about something 掩藏自己的思想感情；锁上心扉；不再想某件事 He brought down the shutters on the image of the dying girl. 他关闭了那个垂死女孩的百叶窗。 I could feel the shutters coming down in her mind. 我能感觉到她心里的那扇门在慢慢关闭。