radioactive substances

基本解釋

Madame Curie was the physicist with expertise in chemistry that, in 1898, discovered the radioactive substances of radium and polonium in Paris, France.
居裡夫人是一位具有化學(xué)專門知識的物理學(xué)家。 1898年，她在法國巴黎發(fā)現(xiàn)了放射性物質(zhì)的鐳和釙。
"I avoid going to restaurants because of the problems with food and vegetables found to contain radioactive substances, " said one 38-year-old company worker.
一個38嵗的公司人員說：“由於食物和蔬菜中檢測到放射性物質(zhì)，我盡量不去餐館喫飯?！?/li>
權(quán)威例句
After poring over the data, engineers and physicists noted a recurring pattern 33 days long that affected the decay rates of the various radioactive substances.
FORBES: Radioactive Decay Rates May Not Be Constant After All