Birds use warm air currents to help their flight.
鸟利用暖气流助飞。
The birds are found in over 70 different localities.
现已发现这种鸟栖息在70多个不同的地区。
The lake is noted as a home to many birds.
这个湖作为许多鸟类的.栖息地而闻名。
The cat was on the wall, watching for birds.
那只猫在墙上伺机捕捉鸟儿。
Some birds which were once a common sight are now becoming rare.
有些曾经随处可见的鸟类现在日益稀少。