The problem, though, is that when oyster 6x7 is bred with itself, the resulting offspring are puny again.
但问题是，一旦“牡蛎6x7”与自身繁殖，其后代又变得十分弱小了。
When the researchers raised snails in the water, they bred with extreme rapidity - a warning sign that the chemicals were active.
研究人员在水中养蜗牛时发现蜗牛的繁殖速度极快——这是一个警告信号：该化学物质很活跃。
If it is promising, it is selectively bred with other fit offspring to see if the results, when subject to further mutation, can do even better.
如果这个后代大有希望，那它则会被选择与其它合适的后代进行繁殖来看结果(这是会进行进一步的变化)是否会更好。
Same went for the female flies bred with the male version of the gene - they acted more like male flies, often even attempting to mate with other females.
相同的如果雌性果蝇和好战的雄性结合后，她们的行为会更像雄性，并经常试图去和别的雌性作战。
When male flies were bred with the female version of the fighting gene, they tended to act like females, favoring head butts and shoves over the more aggressive lunges.
当雄性与具有好战基因的雌性繁殖后，他们往往会像雌性一样使用头顶战术并变得更有战斗性。
Plants could be specially bred with strong cellulose, for use in briquettes and wood substitutes, or with weak cellulose better suited for cellulosic ethanol production.
这样就可以通过对植物的专门培育，将强度高的纤维素用于生产煤饼和木材替代品，将强度低的纤维素用于生产纤维质乙醇。
The new sterile line M_A bred with the maintainer line still has the character of recessive nuclear sterility and both G. hirsutum and G. barbadense varieties are its restorers.
利用这种保持系繁殖的新不育系M_A，仍具备隐性核不育的特点，所有陆地棉和海岛棉品种均是其恢复系。
They crossed a tiger with a lion and bred a tiglon.
他们将一只老虎与一只狮子杂交，结果生出一只虎狮。
Dogs are often bred far too frequently, are kept cramped together in squalor, and are not socialized with humans.
狗狗们经常被过度繁殖，极不卫生的拥挤在一起，也没有和人类的社交训练。
They can be bred by crossing wolves with a range of dog breeds, including German shepherds, akitas, malamutes, huskies and inuits.
通过把狼和一系列品种的狗杂交就可以繁殖杂交狼，包括德国牧羊犬、秋田犬、阿拉斯加雪橇犬、哈士奇和因纽特犬。
The puppies names all are preceded with the letter "R" to show that they came from the "R" litter and to "indicate that they were bred through the program at Lackland."
这些小狗的名字前面都以字母“R”打头，表明它们属于“R”字辈。并“表示他们出自拉克兰空军基地。”
This man, in his attire, as in all his person, realized the type of what may be called the well-bred mendicant, — extreme wretchedness combined with extreme cleanliness.
那人，从他的服装和神气看去，是极其穷苦而又极其整洁的，可以说是体现了人们称为高等乞丐的那一种。
Marianne told her, with the greatest delight, that Willoughby had given her a horse, one that he had bred himself on his estate in Somersetshire, and which was exactly calculated to carry a woman.
玛丽安欣喜异常地告诉她，威洛比送给她一匹马。这匹马是他在他萨默塞特郡的庄园里亲自喂养的，正好供女人骑用。
Sometimes that's been good, but many times it has turned a remote location that only ever saw cowboys into a small city, with concrete, powerlines and plumbing to serve the city-bred visitors.
但在大多数情况下，这会让一些只能看到牛仔的边远地区变成一座小城市，到处都是为城市游客提供服务的建筑物、电线和管道。
In many species with long childhoods, female choice bred males to evolve increasing emotional investment in their offspring.
在许多拥有较长幼年期的物种中，雌性选择让雄性孵化后代来增加雄性对子代的感情投入。
MEET Julius Meinl V in a bar in Belgravia and he seems the epitome of the well-bred Englishman, with no trace of an accent.
在贝尔塔莱维亚区（译者注：伦敦的上流住宅区）的一间酒吧里见到尤利乌斯.麦尔五世时，他看上去就像是有良好教养的英国人的代表，说话不带一丝英国口音。
Bred for centuries to deal with predators without human intervention, the Great Pyrenees has strong instincts and will act upon them, sometimes even to the chagrin of its owner.
因为经过几个世纪在无人为干预的情况与天敌斗争，大白熊也拥有了强烈的直觉和判断，以及自主的性格，这点让饲养者也十分懊恼。
On her gap year she literally ran away with a Gypsy - my father, who bred horses.
她在一次休学年(gap year)毫不犹豫地跟人逃走了——一个养马的吉普赛人，我的父亲。
These strong-eyed dogs have been bred to work in this style. They have also been bred for working temperament, to be biddable working for and with their handler.
人们繁殖S的狗就是为了让它们能以这种方式工作，也为了它们能具有有利工作的良好的性格，顺从，并且听从主人的指令。
The big difference with the next generation of technology, argues Mr West of Pioneer Hi-Bred, is that it will also provide benefits to consumers.
Pioneer Hi-Bred的West先生认为下一代技术最大的不同是在给农民带来利益的同时，也会给消费者带来利益。
However, with the increased number of captive bred Harris and Redtail hawks available today at very modest prices, the Buzzard is now being overlooked.
但是，随着圈养繁殖哈里斯鹰和红尾鵟数量日增，其价格现今已趋于非常温和，鹫正逐渐被忽略。
Good manners is the art of making those people easy with who we converse. Whoever makes the fewest people uneasy is the best bred in the room.
好的礼貌是可以使我们交谈的人更加容易接触的艺术。谁让更少的人感觉自然谁就是房间里的明星。
They have bred a new variety of rose with larger flowers.
他们培养了能开大花朵的新品种的玫瑰花。
They have bred a new variety of rose with larger flowers.
他们培养了能开大花朵的新品种的玫瑰花。
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