例句：
This species of bird is decreasing in numbers every year.
這種鳥的數(shù)量在逐年減少。
The area has a wealth of bird life.
這個地區(qū)棲息著大量的鳥。
The lake is noted as a home to many birds.
這個湖作為許多鳥類的棲息地而聞名。
Ten new cases of bird flu were reported yesterday.
昨天新增十例禽流感病例報(bào)告。