The study, appearing Oct. 29 in Nature, may improve conservation efforts for migratory birds.(该研究发表于10月29日的《自然》杂志，候鸟保育研究有了新进展。)
As the season changes, migratory birds begin to arrive at the coastal wetland.(随着季节的变化，候鸟开始陆续到达沿海的湿地。)
The role of migratory birds in the spread of highly pathogenic avian influenza is not fully understood.(候鸟传播高致病性禽流感的作用尚不完全清楚。)
Early in his research, Kramer found that caged migratory birds became very restless at about the time they would normally have begun migration in the wild.(在克雷默早期的研究中，他发现被关在笼中的候鸟在它们通常开始在迁徙的大致时间会变得非常不安。)
The livestock on the green side was managed in a way designed to mimic the great migratory herds of Africa.(在草木葱翠的一边，人们模仿非洲草原上动物的迁移的模式对牲口进行管理。)
The differences in feeding preferences lead, in turn, to differences in migratory habits.(摄食偏好的差异，又导致了迁徙习惯的不同。)
The Salyan Rayon is located near wetlands frequented by migratory birds.(萨利亚内区地处经常出现候鸟的湿地附近。)
For photo of Northern Harriers, Bear River Migratory Bird Refuge, ut.(这张白尾鹞照片摄于犹他州贝尔河候鸟保护地。)
Any of migratory songbirds of the family Turdidae usually have brownish upper plumage.(任何一种鸫科迁徒鸟类的上部羽毛通常为褐色。)
The hours were lengthy, the work difficult and migratory and the accommodations rough.(工作时间漫长，工作艰苦而且需要奔波，食宿条件简陋。)
