1. in the dark在黑暗中
I had to feel about in the dark for the light switch.
我得在黑暗中摸索尋找電燈開關。
She groped blindly for the light switch in the dark room.
她在黑暗的房間裡摸索電燈開關。
I'm frightened of walking home alone in the dark.
我害怕在黑夜單獨走路回家。
Cats can see in the dark.
貓在黑暗中能看見東西。
It took a few moments for her eyes to focus in the dark.
過了好幾分鐘她的眼睛才适應了黑暗。
Ghostly shapes moved around in the dark.
有幾個鬼一樣的影子在黑暗中遊蕩。
We were stumbling around in the dark looking for a candle.
黑暗中，我們東跌西撞地找蠟燭。
I stumbled along in the dark, trusting to luck to find the right door.
我摸黑跌跌撞撞地往前走，全憑運氣去找對門。
Her eyes gleamed in the dark.
她的眼睛在黑暗中閃爍。
Camp fires flared like beacons in the dark.
營火突然熊熊燃燒起來，看上去就像黑暗中的航标燈。
I'm frightened of walking home alone in the dark.
我害怕在黑夜單獨走路回家。
She crouched in the dark, too frightened to reveal herself.
她蜷縮在黑暗中，吓得不敢露面。
I've been groping in the dark in a number of years.
多年來，我一直在黑暗中摸索。
2. 對某事全然不知，一無所知，蒙在鼓裡，茫然無知
後面常接 about，常用于搭配 keep sb in the dark 中，例如：
Workers were kept in the dark about the plans to sell the company.
勞工全然不知出售公司的計劃。
I'm really sorry that I kept you in the dark about my promotion but management thought it would create problems within the team.
我真的很抱歉讓你對我的晉升一無所知，但管理層認為這會給團隊帶來問題。
I managed to keep my parents in the dark about this
我設法對父母瞞下了此事。
I'm as much in the dark as you.
我和你一樣毫不知情。
The investigators admit that they are completely in the dark about the killing
調查人員承認他們對這起謀殺一無所知。
How come they left you in the dark?
他們怎麼把你蒙在鼓裡？