| 1. | The infected breeder flocks are quarantined from uninfected flocks .
把感染群同非感染群隔离开来。 |
| 2. | All the best breeders are strongly opposed to this practice .
第一流育种家都强烈反对采用这个方法。 |
| 3. | Relatively few foresters or tree breeders consider the presence of edaphic ecotypes .
考虑到存在土壤生态型的林学家或树木育种家相当少。 |
| 4. | Cultivar development may come to rely more upon the non-institutional peach breeders .
品种发展也许最终将更多地依靠非专业的桃育种工作者。 |
| 5. | Most characters of economic value to plant and animal breeders are metric characters .
对植物和动物育种家具有经济价值的大多数性状是一些度量性状。 |
| 6. | There is an intermediate type of ryegrass first produced by a new zealand plant breeder .
还有一类中期黑麦草，为新西兰一名植物培养家首先培育出来。 |
| 7. | No other explanation than this model for seasonal breeders needs to be invoked .
对于季节性生育的种类来说，这种情况的解释除了本模式以外，不需要再涉及其它。 |
| 8. | Breeders of thoroughbred animals perpetuate genetic disorders to keep pedigrees pure .
纯种家畜的养育者们为了保持纯正的动物血统无休止地制造遗传上的混乱现象。 |
| 9. | Breeders tend to rely on tested treatment and storage schedules and on reasonably prompt sowing .
育种者采用的办法是倾向于信赖试验处理和贮藏设计方案以及合理的及时播种。 |
