two-way mirror

noun

🔊/ˌtuː weɪ ˈmɪrə(r)/

🔊/ˌtuː weɪ ˈmɪrər/

(also one-way mirror)

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a piece of glass that is a mirror on one side, but that you can see through from the other单向透明玻璃镜（一面是镜子，但从镜后可看到镜前面）
- He watched them through a two-way mirror.他透过双向透明玻璃镜看着他们。