不断变异和适应是病原体的生存机理。
Constant mutation and adaptation are the survival mechanisms of pathogens.
另一方面，科学家还需要弄清这些生物的生存机理。
On the other hand, scientists have had to explain how such creatures functioned.
尽管已经证实它们对HIV的生存是有必需的，但是确切的作用机理还不清楚。
Although they appear necessary for HIV's survival, precisely what they do that the virus needs is unknown.
桉树类树种的蒸腾速率较高，但能生存的主要机理是根系分布深，主动供水能力强，补充了地上部分的水分消耗；
The survival mechanism of Eucalyptus with high transpiration rate in dry hot valley is for their deep root system that can actively supply water to the leaves.
因此，对野生扬子鳄种群繁殖机理和长期存在于高强度人为活动的压力之下的生存对策的研究，是恢复野生扬子鳄种群数量，使其免遭灭绝的关键。
The key to save the wild Chinese Alligator is to know the breeding mechanism of the remaining wild population and its survival strategy under such a serious human pressure.
现代理性主义以其有限性、不完善性和悲剧意识的新特点昭示着成熟理性的一种人的生活世界的内在机理和人的生存的内在人本精神。
Modern rationalism, characterized of limitness, imperfectness and tragic consciousness, reflects a kind of human world's inside mechanism and the existence of the inside humanity spirit.
这些电刺激方式在不同的机理下，可改变肿瘤组织的生存环境，用于辅助或直接治疗癌症。
These electrical stimulate methods change the living environment of malignancy tissue to help or direct treat cancer.
为进一步探索蜘蛛丝的成丝机理，研究了不同个体大小，不同生存方式，不同环境湿度的大腹圆蛛牵引丝的拉伸性能。
The mechanical properties of the Araneus Ventrious spider dragline silks were studied at variable conditions, humidity, spider's weight, crawling way, to understand spider's spinning mechanisms.
此项研究的目的是揭示前列腺癌细胞抵制降低男性激素(如睾酮)治疗的机理，而细胞的生存正常情况下是需要男性激素的。
The goal of the research was to uncover how prostate cancer cells become resistant to treatment that lowers levels of male hormones such as testosterone, which the cells normally need to survive.
此项研究的目的是揭示前列腺癌细胞抵制降低男性激素(如睾酮)治疗的机理，而细胞的生存正常情况下是需要男性激素的。
The goal of the research was to uncover how prostate cancer cells become resistant to treatment that lowers levels of male hormones such as testosterone, which the cells normally need to survive.
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