The weapons are undergoing ballistics tests to see whether they were used in the shootings.这些武器正在接受弹道测试，以确定它们是否曾用于枪击案中。Ballistics was used in the criminal case to determine the gun's firing capacity.在该刑事案件中人们运用弹道学原理...
这些虫子用肉眼看不见。The worms cannot be seen by the naked eye.这是肉眼胜过雷达的又一事例。It was yet another case where the human eye outperformed radar.整周都可以用肉眼观察到火星。The planet Mars will be visible to the naked eye all week....