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

　　在上個世紀(jì)，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(nèi)區(qū)地處經(jīng)常出現(xiàn)候鳥的濕地附近。