繁殖对

breeding pair───繁殖对

reading chairs───阅读椅

breeding seasons───繁殖季节

bleeding hearts───流血的心

breaking points───n.[计]断点；视图（；eakpoint的复数）

breeding season───繁殖期；繁殖季节；生殖季

breeding stocks───种畜

The Slavonian grebe, one of Scotland's most mysterious birds, has been in decline in recent years, with breeding pairs falling from about 80 at their peak during the 1970s and 1980s to just 22 today.───角䴙䴘，苏格兰最为神秘的鸟之一，在最近几年里面数量一直在下降。在20世纪七八十年代的鼎盛时期，有孵育能力的角䴙䴘还有大约80对，而到现在只剩下了22对。

But with a population of only 30, and only two breeding pairs in 2008, its fate hangs by a thread.───然而仅存30只，且只有两对在2008年配对繁殖，凤头燕欧又真是命悬一线。

Twenty-two years after the programme started, there are an estimated 1,000 breeding pairs.───这个项目开始22年后，据估计现在有大约1000对繁衍后代的鸟儿。

victorians hunted them to extinction in the UK but in 1975 they were reintroduced to Scotland from Norway. There are 30 breeding pairs.───维多利亚时代的英国金雕被捕杀绝种，1975年从挪威重新引进了30对雌雄育种金雕到苏格兰。

However, we do have several breeding pairs that give 4-6 broods per year.───但是，我们让几对繁殖的鱼每年繁殖4-6窝。

It should be noted that counts of breeding pairs of this species must be made early in the year to be accurate.

The stone-curlew reached a low of around 160 breeding pairs in the 1980s, but this year 370 pairs are known to have bred.

The thieves knew exactly what they were after - breeding pairs of parrots and parakeets - six thousand pounds worth.

Triumphantly he promised four breeding pairs from his own small collection to the Trust.

Each summer, they find about thirty five new breeding pairs.

Last year there were 80 breeding pairs which produced 100 fledglings - they are now being studied by Durham University.

There are now only 3,000 breeding pairs in the wild, but there are up to 30,000 in captivity.