Low levels of straying are crucial, since the process provides a source of novel genes and a mechanism by which a location can be repopulated should the fish there disappear.
低水平的游离是至关重要的，因为这个过程提供了一种新基因的来源和一种机制，通过这种机制，如果该地鱼群消失，可以重新繁殖该种群。
There are a number of distinguishing characteristics by which you can identify a Hollywood epic.
通过其诸多与众不同的特点,你可以识别出好莱坞的史诗影片。
A symbol by which the relief workers could be recognized was devised.
一个可以用来识别救援人员的标志被设计了出来。
Milton is narrating or representing the process by which they are silenced.
弥尔顿在叙述或描绘这个他们缄默的过程。
Milton is narrating or representing the process by which they are silenced.
弥尔顿在叙述或描绘这个他们缄默的过程。
There are a number of ways by which temperature influences economic activities.
温度影响经济活动的方式有很多。
The MSC has established a set of criteria by which commercial fisheries can be judged.
MSC已经建立了一套可以用来衡量商业渔业的标准。
It's defined by which horizontal or vertical slice of the world you connect yourself with.
它是由你所连接的世界的水平或垂直部分来定义的。
The complications will greatly increase the risk of diabetes, by which about 75% of the deaths are caused.
这些并发症将大大增加患糖尿病的风险，约75%的死亡是由糖尿病引起的。
The study suggests that the cultures we grow up in influence the basic processes by which we see world around us.
研究表明，我们在成长中所受到的文化熏陶影响着我们看待周围世界的基本过程。
The neocortex is also responsible for the process by which we decide on and commit to particular courses of action.
新大脑皮层也负责我们决定和采取特定行动的过程。
To create a factory-built skyscraper, Broad had to abandon the principles by which skyscrapers are typically designed.
为了在工厂之上建造摩天大楼，远大集团不得不放弃摩天大楼通常的设计原则。
Last time we talked about photosynthesis, the process by which plants use light to convert carbon dioxide and water into food.
上次我们讨论了光合作用，即植物利用光将二氧化碳和水转化为食物的过程。
The third and final stage was to lift the entire structure into the air, by which time the hull was also supported from below.
第三个阶段，也是最后一个阶段，是把整个建筑升到空中，这时船体也在下面起支撑作用。
The blind fury here is the mythological figure Atropos; this is the Fate that cuts the slender thread by which our lives dangle.
这里的盲目暴怒是指神话人物阿特洛波斯；这是命运剪断了生命悬线的细线。
According to Valerie Gauthier, associate dean at HEC Paris, the key lies in the process by which MBA programmes recruit their students.
巴黎高等商学院的副院长ValerieGauthier 表示，MBA课程招生的过程是关键。
In short, the mechanisms by which our brains learn language, math, physics, and every other subject don't differ between boys and girls.
简而言之，男孩和女孩的大脑学习语言、数学、物理和其他学科的机制并没有什么不同。
Great Britain had large amounts of coal; however, there were not yet efficient means by which to produce mechanical energy or to power machinery.
英国有大量的煤；然而，当时还没有有效的方法来产生机械能或为机器提供动力。
When one considers the many ways by which organisms are completely destroyed after death, it is remarkable that fossils are as common as they are.
当我们考虑到生物在死亡后被完全摧毁的许多方式时，化石能够和生物本身一样常见这一事实是很令人惊讶的。
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