Barker watched it all from behind a one-way mirror and his early reports were gloomy.

巴克从一个单面镜子后面目睹了这一切，他给出的最初报告十分悲观。

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Unbeknownst to them, a male observer and a female observer watch the interaction from behind a one-way mirror.

他们并不知道，从一个单向镜的后面，还有一名男性和一名女性观察员在观察着他们之间的互动。

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A one-way mirror has a reflective coating applied in a very thin, sparse layer — so thin that it's called a half-silvered surface.

单向认人镜具有反光涂层应用于一个非常薄，稀疏的层——如此之薄这被称为一个半镀银的表面。

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Karlberg set up a one-way mirror in a storefront over a year-long period, taking pictures of strangers as they looked at themselves in the mirror.

FORBES: Through The Looking Glass: Portraits Taken Through a One-Way Mirror

Toy designers Worlds Apart have a lab with a one-way mirror at their Cornwall headquarters that allows them to observe how children interact with toys they are developing.

BBC: Toys and games: Are we paying for products that teach?

There was no recording of the interrogation, no one else was in the room or watching from a two-way mirror, and Saldate said he threw away his notes shortly after completing his report.

CNN: STORY HIGHLIGHTS