Since then, Iran has moved to enrich more uranium gas closer to weapons-grade levels.

自那以后，伊朗开始浓缩更多接近武器级水平的铀气体。

The Fordow facility contains over a thousand centrifuges that Iran can use to enrich uranium gas.

福尔道核设施有超过1000台离心机，伊朗可用来浓缩铀气体。

Volcanoes bring other vital minerals to the surface that enrich the soil and release gases that help create the air we breathe.

火山还把其他重要的矿物质带到了地表，土壤因此变得肥沃，火山还释放出参与创建了大气的气体。