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首页英语词典radioactivityradioactivity考试真题

radioactivity

英 [,reɪdɪəʊæk'tɪvɪtɪ] 美[,redɪoæk'tɪvəti]

英英释义考试真题实用场景例句

n. 放射性；[核] 放射能力；[核] 放射现象

考试真题

Frederic became one of her assistants, and Irene taught him the techniques required to work with radioactivity.