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

leitos bacterianos
environ.	细菌床 (用于去除污水中悬浮固体物质的装置。 由曝气和细菌分解从沙中过滤的废污，使干净的水得由细菌床中排出。)