Portuguese ⇄ Arabic Basque Bulgarian Catalan Chinese Croatian Czech Danish Dutch English Estonian Finnish French German Greek Hungarian Irish Italian Japanese Latvian Lithuanian Maltese Norwegian Bokmål Polish Romanian Russian Slovak Slovene Spanish Swedish Turkish Ukrainian

radiação alfa
environ.	阿尔法射线 (许多放射性物质发射出的、能穿透几厘米的空气但会被一张薄纸挡住的阿尔法粒子流。)