There is an intermediate type of ryegrass first produced by a New Zealand plant breeder.

To produce ( fissionable material ) in a breeder reactor.

产生裂变的物质增殖,指在增殖反应堆里产生 ( 可裂变的物质 )

Here are a few guidelines gleaned from experienced breeders.

这里是从有经验的育种家那里收集来的一些指南.

Until now, crop breeders have paid little attention to inducible resistance.

直到现在为止, 作物培育者还很少注意诱导抗性.

Immediately , rose breeders began using it to hybridize red roses for cultivation.

当时, 它一直生长在中国山区的野地里.

Usually breeders make kittens available between twelve and sixteen weeks of age.

繁育者通常会在12至16周期间开始出售小猫.

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.

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.

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.

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.

Great crises are breeders of great events in history.

严重的危机引发重大的历史事件.

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.

Until now,crop breeders have paid little attention to inducible resistance.

直到现在为止，作物培育者还很少注意诱导抗性。

Mice are prolific breeders.

鼠类繁殖力很强.

He is one of the outstanding pig-breeders of the commune.

在公社里,他是数得着的养猪能手.

The new database will help horse breeders enormously.

新数据库将对马匹饲养者有极大的帮助。

They are prolific breeders, with many hens laying up to six eggs.

他们都是多产的饲养员，养的母鸡很多都可以下6个蛋之多。

It's a sign of good breeding to know the names of all your staff.

知道所有员工的名字是有良好教养的一种体现。

Britain's rarest breeding birds are under threat from fanatical and selfish egg collectors.

英国最珍贵的种鸟正因为那些狂热而自私的鸟蛋收集者而面临着威胁。

In this grumpy repression hatred finds an excellent breeding ground.

在这个粗暴的压制里,仇恨找到了发芽的好地方.

The district was a breeding ground for vice.

那地区是罪恶的滋生地.