Around half of the world's wetlands disappeared in the last century.
在上個世紀，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.
薩利亞內區地處經常出現候鳥的濕地附近。