极其

Apomixis provides a unique opportunity to fix and utilize hybrid vigor. A number of research programs around the world have tried to use apomixis as an important plant-breeding tool.

无融合生殖是指不经过雌雄配子融合而产生种子的一种特殊生殖方式，能使基因型的杂合性得以保持，从而可以固定杂种优势，对作物育种具有极其重要的意义。

In the central area, there are plains on the coast which give way rapidly to the foothill of the Appalachians and then to the mountains themselves.

他们被那片西部土地所吸引。这片土地幅员辽阔，通常可以无偿获得，而且那里未开发的资源也极其丰富。

So the research of this algorithm has very wide prospect of appliance.

因此，该算法的研究具有极其广阔的应用前景。

Unfortunately, it is extremely difficult to keep a plasma going for any appreciable length of time.

糟糕的是，要想让plasma约束一个可观的时间是极其困难的。

One of the key issues in the design of fault diagnosis scheme is the effect of modelling uncertainties and disturbances. By using neural networks observer or approximator, the fault detection and diagnosis strategy for a class of nonlinear systems with modelling uncertainties are investigated.

而非线性系统故障诊断算法的鲁棒性则是一个极其关键的问题，本文主要针对非线性系统，进行了基于神经网络的鲁棒故障诊断方法研究。

Limit economic base to take regnant position relations of production, and eliminate the relations of production that is in appurtenant position at economic base category entirely besides, this is extremely wrong.

将经济基础界定为占统治地位生产关系，而把处于从属地位的生产关系全部排除于经济基础范畴之外，这是极其错误的。

In addition, cognition was consistently found to explain a significant proportion of the variance of the learners' performance with respect to the density, aptness and novelty of the metaphor generated whereas language proficiency was invariably not.

对于隐喻生成而言，学习者的认知能力对构成生成能力的三个变量：隐喻的数量、恰当性、新颖性的预测能力都极其明显，依次达到75.5%， 84.3%， 76.8%，而语言水平的预测力都不明显。

These results have considerable implications for resource management and aquaculture for this species.

这一结果对这种蟹的资源管理和养殖有着极其大的启发意义。

Excavations make it clear that Arbela was already occupied in the fourth millennium BCE, but it is extremely difficult to know more about the first two thousand years of its history, because the modern city lies on top of the ancient town, which makes excavation difficult..

发掘表明， Arbela已经被占领的公元前4千年，但它是极其困难更多地了解第一二千年的历史，因为现代城市位於上方的古镇，这使得开挖困难。。

And it is extremely arduous to be free of them, is it not?

要摆脱结论是极其艰苦的，不是吗？

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。