A detector is an instrument which is used to discover that something is present somewhere, or to measure how much of something there is. 探测器
noun [专属名词] 探测器，检测器；发现者
Their approach is to scan every checked-in bag with a bomb detector. 他们的做法是用炸弹探测器扫描每一个办理了登机手续的箱包。
