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Radon is the daughter of radium.是什么意思？

Radon is the daughter of radium.

氡是镭的子体.

相关词汇
is the daughter of radium

is

vt.& vi. 是（be的三单形式；n. 存在；

the

art. 指已提到的人（物），指说话人与听者已知的人（物），用于独一无二的事物前，与形容词最高级和序数词连用；

daughter

n. 女儿，产物，后代，（某地的）妇女，[生]子代；adj. 女儿般的，[生]第一代的，子代的；

of

prep. 关于，属于…的，由…制成；aux. 助动词 [非标准用语、方言] =have [主用于虚拟语气]；

radium

n. <化>镭(88号元素符号Ra)；
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