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

森林退化 森林树木数量的减少，主要因为酸性降水，森林火灾，空气污染，森林砍伐，虫害和树木疾病，野生动物等。
environ.	achteruitgang van het bos