Birds use warm air currents to help their flight.
鳥利用暖氣流助飛。
The birds are found in over 70 different localities.
現(xiàn)已發(fā)現(xiàn)這種鳥棲息在70多個不同的地區(qū)。
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。
The cat was on the wall, watching for birds.
那只貓在墻上伺機(jī)捕捉鳥兒。
Some birds which were once a common sight are now becoming rare.
有些曾經(jīng)隨處可見的鳥類現(xiàn)在日益稀少。