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Neurite regeneration from central nervous tissue of mammalian has been demonstrated to occur in early postnatal stage but not in adult stage.

刚出生的哺乳动物之中枢神经组织在体外培养具有神经轴突再生的能力，但是成人期的中枢神经组织就丧失此能力。

However , where nesting sites are hard to find , fighting can occur .

然而，在筑巢很难找到，战斗也是有存在的。

Neuroleptic malignant syndrome refers to the combination of hyperthermia, rigidity, and autonomic dysregulation that can occur as a serious complication of the use of antipsychotic drugs.

抗精神病药恶性综合征是指相结合的热疗，刚度和自主失调，可出现严重的并发症，使用抗精神病药物。

Asperger's also goes some way to rationalising the complete communication breakdown that could occur between Nicholls and journalists.

Asperger's综合症也能合理的解释为什么Nicholls和那些记者之间会发生那样巨大的交流障碍。

The endometrium undergoescharacteristic morphological and biochemical changes under the influence of the ovarian steroid hormones in preparation for nidation. As a general regulator of implantation, the steroid hormones make effect through their receptors respectively; direct or indirect regulate the secretion of cytokines, growth factors and molecular adhesions, which may be necessary for successful implantation to occur.

比例适当的雌、孕激素通过各自的受体作用于子宫内膜，是着床的总调控师，使子宫内膜间质水肿、血管扩张充血，为胚胎着床提供物质基础；间接或直接调控着细胞因子、生长因子及粘附分子的分泌和释放。

This may occur in response to a high level of reduced nitrogen in the medium.

这可能是由于对培养基中高水平的还原氮的反应而发生的。

Richard Nixon Miracles sometimes occur, but one has to work terribly for them.

奇迹有时候是会发生的，但是你得为之拼命的努力。

Akerlof and Shiller think that by "animal spirits" Keynes meant "noneconomic motives and irrational behaviors," and they imply that he wanted government to "countervail the excesses that occur because of our animal spirits."

阿克洛夫和希勒认为，凯恩斯所说的"动物精神"，就是指"非经济的动因和非理性的行为"。他们暗示说，凯恩斯希望政府"来对抗因动物精神而产生的无节制"。

The theory is based on two methods to show that initial folding sites occur among nonpolar groups in a polypeptide chain.

该理论是基于两种方法的基础上提出的，指出蛋白最初的折叠位点出现在多肽链的非极性基团处。

Based on fuzzy feature that the concrete crack width affects concrete structure durability, the membership function that the crack width belongs to the durability failure is established, the calculation method of fuzzy probability about structure durability failure is submitted, and classifing standard of the sturucture durability state is proposed, In accordance with the stochastic nature that cracks on concrete bridges occur and grow, and by assuming that crack occurrence obeys nonstable Poission process, predicting and evaluating methods about future crack condition and durability state of concrete bridge structures are suggested.

依混凝土裂缝宽度对混凝土结构耐久性影响的模糊特性，建立了裂缝宽度隶属耐久性失效的隶属函数，提出了结构耐久性失效的模糊概率计算方法，并建议了结构耐久性状态的划分标准；针对混凝土桥梁裂缝发生、发展的随机性，以裂缝的发生服从非稳态的泊松过程的假设为前提，提出了混凝土桥梁结构裂缝未来状况及耐久性未来状态的预测评估方法。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。