提到了曳光弹(Tracer Bullets)和原型(Prototype)的区别，个人理解如下： 前者更像是真实环境下..
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同义词： tracer
以上来源于: WordNet
The nitrate and chlorate, very volatile, give off brilliant crimson flames and are used in flares, fireworks, and tracer bullets.
卤化锶、硝酸锶和氯酸锶极易挥发，并能使火焰呈亮猩红色，用于各种照明弹、烟花和曳光弹中。
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His unit was caught in what Mr Ellicock describes as a Vietnam-style exchange of red and green tracer bullets.
BBC: London Marathon: Ex-paratrooper runs for record
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