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Polonium is a highly radioactive element and a metalloid.是什么意思？

Polonium is a highly radioactive element and a metalloid.

钋是高放射性的元素,金属.

相关词汇
polonium is highly radioactive element and metalloid

polonium

--

is

vt.& vi. 是（be的三单形式；n. 存在；

highly

adv. 高度地，极，非常，非常赞许地；

radioactive

adj. 放射性的；

element

n. [化]元素，要素，原理，[电]电阻丝；

and

conj. 和，与，而且，于是，然后，因此；

metalloid

n. 类金属；adj. 类似金属性的；
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