Around half of the world's wetlands disappeared in the last century.

　　在上個(gè)世紀，世界上的濕地消失了一半左右。

　　Wetlands often develop in the meander scars of dried-up oxbow lakes.

　　U型湖干掉后的曲流痕往往孕育出濕地。

　　The Salyan Rayon is located near wetlands frequented by migratory birds.

　　薩利亞內區地處經(jīng)常出現候鳥(niǎo)的濕地附近。