1 sentence

1. 由于化学性质活泼，这种元素在自然界中很少以单质形式存在。

   yóu​yú huà​xué xìng​zhì huó​po, zhè zhǒng yuán​sù zài zì​rán​jiè zhōng hěn shǎo yǐ dān​zhì xíng​shì cún​zài.

   Due to its high chemical reactivity, this element is rarely found in nature in its pure form.

   Source: Dong Chinese Dictionary