大部分麻将馆都装了带窥视孔的外门，有的有闭路保安摄像机，赌客们说。

Most parlors have outer doors with peepholes, and some have closed-circuit security cameras, gamblers say.

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老板们对来客更小心；大部分麻将馆都装了带窥视孔的外门，有的有闭路保安摄像机，赌客们说。

Bosses have been more careful about whom they let in; most parlors have outer doors with peepholes, and some have closed-circuit security cameras, gamblers say.

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