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- Polonium is a naturally radioactive metallic element. 钋是一种具有天然辐射性的金属元素。
- In 1932 the Joliot-Curies made a radioactive metal bombard beryllium--which is a non-radio-active metal--with its rays. The result was that the beryllium, too, became radioactive- even more so than the original source of the rays. 1932年，约里奥一居里夫妇用一种放射性金属射线轰炸非放射性金属的铍元素，结果铍元素也具有了放射性，而且其放射性比原来放射性金属所发出的射线还要强。
- Radioactive ray is material thing. 放射线是实际的物质。
- Radium and uranium are radioactive elements. 镭和铀是放射性元素。
- She knows why the metal is the good conductor. 她知道金属为什么是好的导体。
- Can I fasten these metal plates with rivets? 我可以用铆钉把这些金属板固定在一起吗？
- A certain discharge of possible radioactive effluent. 一定量的可能有放射性的废水。
- You need a strong adhesive to bond wood to metal. 需要强力胶才能把木料粘在金属上。
- The car was now just a pile of twisted metal. 那辆汽车已经成了一堆压缩的废铁了。
- The metal basin clattered down the stone stairs. 金属盆子沿着石阶滚了下去，发出咣啷声。
- Aluminum is a kind of light silvery metal. 铝是一种轻薄并呈银色的金属。
- The aeroplane wing showed signs of metal fatigue. 机翼显出有金属疲劳的现象。
- A radioactive isotope of carbon, especially carbon 14. 放射性碳碳的一种放射性同位素，尤指碳14。
- The metal frame tends to twist under pressure. 这种金属框受压後容易变形。
- The ship was broken up for scrap metal. 这艘船拆毁了当废铁用。
- Being heated, the metal is rapidly melting. 由于受热，金属在迅速熔化。
- The metal has corroded (away) because of rust. 该金属已锈蚀。
- A naturally occurring or artificially produced radioactive element. 放射性元素自然产生或人为制造的放射性元素
- A radioactive compound used in radiotherapy or diagnosis. 放射性药剂一种用于放射性治疗或诊断的放射性化合物
- You need a powerful saw to cut through metal. 切割金属需用强劲的锯。
