基本解释放射性探測英汉例句雙語例句To resolve the problem, it is necessary to ascertain the origin of radioactivity with geological prospecting as the first step.要從源頭上解決建材放射性超標的問題，必須查清其中放射性的來源，竝從地質勘查抓起。radioactivity prospecting更多例句词组短语短語prospecting radioactivity 放射性探勘radioactivity prospecting更多词组专业释义地球科學放射性勘探放射能探勘