two-way mirror
Longman Dictionary of Contemporary English 5++LDOCE 5++ˌtwo-way ˈmirror noun [countable] Dglass that is a mirror from one side, but that you can see through from the other 单向透明玻璃镜〔从一面看是镜子，另一面看是透明的玻璃〕
Examples from the Corpus
two-way mirror• Lifeline 1990 consists of a two-way mirror, paint, light, timers and wood.• It had been a short honeymoon: one night in front of a two-way mirror.ˌtwo-way ˈmirror nounChineseSyllable
that that from Corpus is side, a glass one but mirror
two-way mirror
ˌtwo-way ˈmirror
noun [countable]
glass that is a mirror from one side, but that you can see through from the other
ˌtwo-way ˈmirror
noun [countable]glass that is a mirror from one side, but that you can see through from the other