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美国制造了一种专为警察用的手提式电筒,其亮度大、射程远,光线可射向500多米远。它还备有几种不同的镜片;
The United States has built a portable torch designed for the police, which has a high brightness and a long range, and the light can be directed over 500 meters. It is also equipped with several different lenses;