有些是在严格控制的研究环境下饲养的。
更重要的是，日本买家偏爱这种人工饲养的鱼。
据说这只宠物是那位老人饲养的。
神仙鱼是易于饲养的慈鲷科鱼种。
这个彻罗基老人简单回答道：“你饲养的那只。”
然而，在温哥华有鲑鱼饲养的试点项目。
这个彻罗基老人简单回答道：“你饲养的那只。”
她不像要一个她能训练和饲养的小男孩。
他的病史显示最近接触他作为宠物饲养的病鸡。
His history showed recent contact with sick chickens, which he kept as pets.
一条饲养的鱼吃掉的饲料重量比野生鱼多三倍。
A farmed fish will have eaten three times its weight in wild fish.
自家饲养的鸡提供鸡蛋，每星期还能剩余几十个出售。
Our hens keep us in eggs, with several dozen left over to sell each week.
他们往往很有钱，所饲养的狗品种优良，价格也很贵。
They often have money, so they buy fine breeds. It is expensive.
一旦农场饲养的禽类被感染了，该疾病会传播的更快。
Once farm birds become infected, the disease spreads quickly.
专家们都无法确定人们是从什么时候开始将鱼作为一种宠物来饲养的。
Experts do not really know when people began keeping fish as pets.
这种不寻常的杂交品种在20世纪90年代末开始在饲养员中流行起来。
The unusual cross became popular among breeders at the end of the 1990s.
饲养员不想给汤姆和他的表弟巧克力。
The keeper didn't want to give Tom and his cousin chocolates.
我们同样在那里的池塘里饲养鱼。
肉牛的饲养和管理计划也崩溃了。
Breeding and management programs for beef cattle fell apart.
我们石器时代的祖先当然没有生活在饲养场。
Our Stone Age ancestors certainly did not live in a feedlot.
这老人像妈妈带孩子一样饲养他心爱的鸽子。
有关饲养宠物，你说的也是对的。
饲养者可以凭借着本国动物身份证明系统注册，但那完全是自愿的。
Owners can register via the National Animal Identification System, but it is strictly voluntary.
它们是最受欢迎的饲养动物之一。
然后饲养他们的后代并做同样的试验。
Their offspring were reared and the experiment was run again.
然后饲养他们的后代并做同样的试验。
Their offspring were reared and the experiment was run again.
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