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视频简介

子弹经过两百年的科学研究，从一个简单的铅球，变成性能极佳的弹药。科学新发现将介绍子弹的科学，以及子弹如何凭科技的进步，演化为现在的弹药。。When econ teacher Liz (Prosperi) takes a position at Faraday High, she volunteers to organize Carnival Day. She's paired up with tennis coach Ted (Moss) and although they initially have trouble seeing eye to eye on most things, sparks fly.。