In many animal species, sex hormones have been shown to be essential for sexual differentiation of the brain during development and for maintaining sexually dimorphic behavior throughout life.

JB: I would say that a modular approach like Geronimo has taken would be essential for any software project of this size, open source or internal to a single organization.

JB：我认为类似Geronimo采用的模块化方法，对于任何这种规模的软件项目都是很重要的，无论对于开源项目还是对于单独机构的内部项目。

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One of the FR isoforms has been shown to be essential for normal nerve tube development and growth of mouse embryos under conditions of limiting dietary folate.

FR亚型中的一种被证明在限制饮食中叶酸的条件下对于小鼠胚胎中正常的神经管发育和生长是必需的。

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Learning adaptation is the key part of the minority students 'life, which will be essential for the minority students' development in the future and the quality of higher education in China.

学习适应作为少数民族学生学习生活中的核心部分，它直接关系到少数民族学生的学业成就及其未来的发展，同时还关涉到我国高校的教育质量。

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Active intracellular calcium mobilization appears to be essential for maintaining aggregation by PAF, U_ ( 46619) and arachidonic acid.

PAF U（46619）和花生四烯酸诱发的聚集作用的维持也需要细胞内钙的动员。

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In order to vitalize rural economy and popularize science& technology in the countryside, it'll be essential for the farmers to enhance their cultural quality.

振兴农村经济、发展农村料学技术，关键在于提高农民的科技文化素质。

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Total or near-total thyroidectomy and postoperative~ 131I therapy may be essential for a better prognosis in patients with distant metastasis.

有远处转移的患者，行全或近全甲状腺切除术，术后行131I内照射治疗可能有利于提高其生存率。

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This morphological feature leads us to believe that these cells may be essential for the coordinating actions of gastrointestinal ( GI) motility.

这种形态特征使我们相信，这些细胞对胃肠道协调运动是非常重要的。

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The present results indicate that ( 1) the decrease of macrophages in the endometrium during early pregnancy may be essential for embryo implantation;

实验结果提示：子宫巨噬细胞在妊娠早期数量减少可能与胚泡着床有关；

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Inclusion of the deep fascia within the radial forearm flap is conventionally thought to be essential for flap viability.

桡侧前臂皮瓣的深筋膜内容物被常规地认为对皮瓣的存活是必不可少的。

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Gold and oil are two kinds of special commodity than be essential for modern social stability and development, has a very significant impact on all aspects of society.

黄金与石油作为现代社会稳定发展必不可少的两种特殊商品，对现代社会的方方面面都有着非常重要的影响。

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These results showed that it should be essential for the therapeutic effect of ECP that the pulsatile flow could be conducted well in aorta;

结果表明：体外反搏驱动的搏动性血流在主动脉中的良好传导是反搏治疗的基础；

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From an HR planning perspective, the information contained in HRIS files can be essential for filling vacant positions.

从人力资源规划的角度看，包含在HRIS中的信息对填补空缺岗位来说是不可缺少的。

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Results showed that the model was a bistable system and CREB-dependent positive feedback loop might be essential for the bistability.

研究发现，这一模型是一个鲁棒的双稳系统，并且我们假定的CREB依赖的正反馈环是系统存在鲁棒的双稳特性的重要条件。

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Hence, relevant and continuous investments in R& D within LTE continue to be essential for Ericsson.

在R&D因此，有关LTE的和持续的投资，在继续为爱立信必不可少的。

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But a liberal arts foundation might be essential for their future success no matter what field they choose to focus on in University.

但是，不管他们在大学选择哪个专业，良好的文科基础可能对他们将来走向成功有所帮助。

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The results suggest that the 3' terminal noncoding sequence may not be essential for expression and induction of interferon.

结果表明，人αD型干扰素基因的3′端非编码区对其表达并非必需。

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This suggests that conformational integrity of aminoacylase appears to be essential for its catalytic activity.

这表明酶基酰化酶构象的完整性是酶具有催化活力的基础。

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Some of these molecules have been demonstrated to be essential for hair follicle patterning and development.

这些基因中很多都被证明是小鼠的毛囊建成以及发育所必须的。

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This is proven to be essential for life insurance companies to serve the economy, achieve high and stable return.

美国的经验是，根据经济、金融结构变化适时调整资产配置结构是寿险公司服务社会经济，获取良好、稳定收益的重要条件。

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The researchers concluded that such behind-the-back chatter may be essential for group survival.

研究人员的结论是，这种背地里的说长道短对团队的生存也许起到至关重要的作用。

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