硒化物是一种含有硒的化合物。

Selenide is a compound that contains selenium.

巴西坚果是硒的丰富来源。

Brazil nuts are a rich source of selenium.

硒对甲状腺的正常功能至关重要。

Selenium is essential for the proper functioning of the thyroid gland.

这个地区的土壤天然含有高含量的硒。

The soil in this region is naturally high in selenium.

硒的缺乏可能导致严重的健康问题。

A deficiency in selenium can lead to serious health problems.

硒是另一种硫族元素，对人类健康很重要。

Selenium, another chalcogen, is important for human health.

科学家们正在研究硒对癌症预防的影响。

Scientists are studying the effects of selenium on cancer prevention.

发硒含量有增加趋势。

Selenium content of hair was increased.

硒是一种光电导物质。

Selenium is a photoconductive substance.

硒是人体必需微量元素。

Selenium is a trace element essential to human body.