英语语法分析

Polonium is a highly radioactive element and a metalloid.

钋是高放射性的元素，金属。

To assess the pollution of heavy metals and metalloid in soil along road.

评价公路旁土壤中重金属和类金属污染。

Germanium, natural metalloid element raising body's immunity and easing pain.

锗，天然非金属元素提高人体的免疫力，缓解疼痛。