Not only do they keep the class under close watch with high-powered binoculars, through a one-way window, but they communicate by walkie-talkie whenever they spot anything out of line.

• 他们（监考人员）不仅用高功能的双筒望远镜、通过单向玻璃窗把整个班级考生至于严密监视之下，而且一旦发现不轨行为，就用对讲机通报。