走廊空无一人，但一盏闪烁的灯发现了他们，触发了无声警报器。

The corridor was empty, but they could see by a blinking light that a silent alarm had been tripped.

youdao

现在我们靠无声警报器和暗藏照相机。当然了，还有就是每个柜里的一些钱作了记号。

Now we rely on silent alarms and the hidden cameras, and, of course, some of money in each cage is marked.

youdao

现在我们靠无声警报器和暗藏照相机。当然了，还有就是每个柜里的一些钱作了记号。

Now we rely on silent alarms and the hidden cameras, and, of course, some of money in each cage is marked.

youdao