一个名为“子弹飞行”的iPhone应用软件可以让狙击手为射击计算距离和弹道，通过内建的卫星定位功能还能把本地天气状况的影响计算在内。
An iPhone app called Bullet Flight enables snipers to calculate range and trajectory for their shots, and built-in satellite-positioning allows local weather conditions to be taken into account.
这个蓝色的“子弹”每小时飞行500万公里(300万英里)，恰好能赶上激震前沿，此时冲击波因为星际物质的阻挡已经减速。
This interstellar "bullet," traveling over three million miles per hour (5 million km), is just catching up with the shock front, which has been slowed by plowing into interstellar material.
不过，研究人员也要警告那些认为自己可以比高速飞行的子弹还快，比机车还有力量，或能一跳就越过高楼的人。
But there is a word of warning for anyone thinks they could be faster than a speeding bullet, more powerful than a locomotive, or able to leap tall buildings in a single bound.
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