He used to breed dogs for the police.
他过去为警察部门养殖狗。
It is an effective approach to breed the resistance cultivars of seedless grape by transferring resistant gene into the cultivars of Vitis vinifera.
将抗性基因转入葡萄品种是培育无核葡萄抗病品种的有效途径。
The whales migrate some 6,000 miles to breed and calve in the warm lagoons.
这种鲸鱼环游了6,000英里到暖水湖里生育繁殖。
它们需要繁殖。
Officials at Port Lympne were delighted with the new arrival, especially as black rhinos are known for being difficult to breed in captivity.
林姆尼港的官员们对新生命的到来都感到十分开心，特别是因为黑犀牛以难以圈养而闻名。
They don't even come ashore to breed.
它们甚至不到岸上来繁殖。
Once every three or four years, when conditions are right, the lake is covered with the pink birds as they stop flight to breed.
每隔三四年，条件适宜时，湖面上就会布满火烈鸟，它们停止飞行开始繁殖。
Soon tulips were beginning to show up in different colors as growers tried to breed them specifically for colors which would make them even more valuable.
很快，随着种植者们试图培育出更具有价值的颜色，开始有不同颜色的郁金香出现。
Nor does anyone know how to breed eels in captivity.
也没有人知道如何人工饲养繁殖鳗鱼。
What does it take to encourage endangered species to breed?
用什么措施来鼓励濒危物种的繁殖呢？
Over time, unemployment begins to breed its own problems.
时间一过，失业本身就会产生出问题。
He says he will try to breed more cattle and rebuild his life.
他说他会尽力繁殖更多的牛和重建他的生活。
Open source software seems to breed these sorts of communal initiatives.
开源软件吸收了这类社会性创意。
They find it too hard to get work, too easy to get welfare and too tempting to breed.
这些人很难找到工作，却很容易得到救济并前方百计的生育后代。
Feel free to modify the fitness function and the dictionary to breed your own English words.
您可以任意修改适应性函数和dictionary来繁殖您自己的英语单词。
The birds spend most part of their lives in an ocean. They stay ashore 4 months a year to breed.
簇羽海鹦一生几乎都在海上度过，每年只在岸上停留4个月繁殖。
This experience underscores my conviction that rapid regulatory change tends to breed confusion.
这个经历增强了我的信念，即快速的监管变化往往会引起混乱。
In monogamous gulls and albatrosses, it gave females the chance to breed without a male partner.
海鸥与信天翁同样有“一夫一妻”传统，不过雌性在没有雄性的前提下可以更好的哺育后代。
With high protein content, and the ability to breed fast, the snail was seen as an ideal food source.
由于这种蜗牛含有丰富的蛋白质，繁殖速度快，因此被认为是一种理想的食品来源。
They don't like being handled, are very sensitive to changes in their environment and are very hard to breed.
它们不喜欢被管理，对周围环境变化非常敏感及繁殖困难。
The university, with the help of Germany's Leipzig zoo, is leading a project to breed amphibians in captivity.
在德国莱比锡动物园的帮助下，该大学正在主持一个圈养繁殖两栖动物的研究项目。
Salmon hatch in its waters, migrate downstream to the Pacific Ocean, and return against the current to breed.
每年鲑鱼卵都会在哥伦比亚河中孵化，小鲑鱼顺流而下进入太平洋，等到成熟后又会逆流而上抚育下一代。
While the penguins primarily live on sea ice, they seek out ice-free land to breed and to incubate their eggs.
企鹅生活在冰面上，但是它们要寻找一片没有冰的地面来繁育后代。
A car is the perfect place for germs to breed, especially if you eat in it and leave litter or uneaten food around.
汽车是细菌繁殖的最佳场所，尤其是当你在车里吃东西而把垃圾或没吃的食物留在里面的时候。
Over time, unemployment begins to breed its own problems. Workers may be discouraged or their skills may decay.
随着时间的推进，失业人员自身也开始出现问题：技能的生疏或是不被认可。
But again there are limits: it is hard to breed the full recommended daily dose of nutrients into plants this way.
但同时这些计划都有所局限：通过把营养元素“种进”作物的方法，完全达到推荐的日营养摄入剂量是很困难的。
It is susceptible to various diseases, and, up until recently, it has been almost impossible to breed in captivity.
熊猫容易感染各种疾病，直到最近，它一直都很难通过人工饲养繁殖。
It is susceptible to various diseases, and, up until recently, it has been almost impossible to breed in captivity.
熊猫容易感染各种疾病，直到最近，它一直都很难通过人工饲养繁殖。
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