<< 傲骨贤妻 第7季 第19集>>
-
1. To determine where a shooter stood,you need to calculate the bullet's trajectory.
要推测射手的位置，就要计算子弹的轨道。
-
2. And the arch of a bullet can look like a rainbow.
子弹的飞行弧线就像彩虹。
-
3. And do bullets create different types of... rainbows?
不同子弹可以制造出不同的...彩虹吗。
-
4. Yes, guns do.
对 枪支可以。
-
5. In this case, you have a 1929 pistol
本案中是1929年的手枪。
-
6. firing a 38-caliber lead bullet
发射1930年左右制造的。
-
7. made circa 1930.
38口径铅弹头子弹。
-
8. And is the fact that it was made in 1930 important?
子弹是1930年制造的 这重要吗。
-
9. Yes. Old ammunition doesn't have as much power,which means that gravity pulls it down faster.
重要 旧弹药没有很大的威力，意味着重力会让它更快地往下掉。
-
10. Modern bullets are typically copper-jacketed
现代的子弹一般都是镀铜的。