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Till now, there's seldom report on the chemistry of Mallotus apelta. So we carried out chemical studies on the alcoholic extract of the roots systematically.

鉴于前人对白背叶化学成份的研究非常少，我们对白背叶根的醇提物进行了系统的化学研究，共分得二十个化合物。

But it is seldom analyzed for the spatial medianic characteristic, especially during cantilever casting construction phase, because of its relatively late appearance, and the kind of bridge using cantilever casting construct is very unusual even now in china.

但由于其出现较晚，采用悬臂施工方式的曲线刚构桥在国内还是比较少，目前国内学者对曲线刚构的空间力学性能尤其是施工阶段缺乏必要的认识。

AIM: Biological function and in vivo survival of differentiated dopaminergic neurons, and comparison to the transplantation of embryonic mesencephalic DNs for treating Parkinson's disease rats are seldom studied.

目的：目前对于体外诱导分化的多巴胺能神经元的生物学功能、体内存活状况，以及与胚胎中脑多巴胺能神经元移植治疗帕金森病大鼠的疗效比较方面尚缺乏深入的研究。

Dates of medusae release of the three growth forms of Millepora at the same site seldom overlaps.

火珊瑚在黄昏开始释放水母体，在日落后会有更多水母体释出。

Elementary education base in the process, first, ranking, memorizing, the examination system, the paper sets in various methods of students' imagination and creativity, but will do topics, students can get a high score, test and seldom someone to ask "why" in the teaching process, the teacher teach students also focus on solving method, and not to teach students to ask "why", the teacher not only, and the evaluation standard is exam, is the so-called "test, teacher, student, expressed the Minge."

在中小学基础教育过程中，分数第一、排名、死记硬背、考试制度、试卷的设置等种种做法都在抑制学生的想象力和创造力，学生只求会做题目，考试能考出高分，而很少有人去问&为什么&，教师在教学过程中也只注重传授给学生解题的方法，而不去教你&为什么&，学生不问，教师不讲，唯一的评价标准是考试，正所谓&考考考，老师的法宝，分分分，学生的命根。&

They reveal the specific background and attitudes of medieval sources (and thus important parts of the early medieval mentality), the medieval notions of women and gender, also the importance of women, in a society where women were seldom regarded as such, but as members of their respective status, but which, in spite of certain social and legal restrictions, was far from being misogynistic.

这些问题显示中古史料特殊的背景和态度（因此它是中古早期思维与心态的重要部分），也显示中古对妇女和性别的概念及妇女的重主要性，以上这些都出现在妇女不被尊重的中古社会，因为妇女是以其社会地位来评判共存在价值，而非妇女本身能力，但尽管某些社会和法律对女性的制约，这种地位立在非表示是对女性的贬抑。

However, currently, the retrieval of multiangular remote sensing seldom considers the use of spectral information. We use MSAVI2 as an index to get the a priori knowledge of LAI. As a result, the a priori knowledge is more objective. From the comparison of using or not using this MSAVI predicted a priori knowledge, we found that this approach is effective.

与以往的反演方法相区别，该文利用行播作物二向反射模型，将多角度与多光谱数据结合进行行播作物LAI反演实验，并对反演算法进行了详细的敏感性分析实验，结果表明采用多角度、多光谱遥感数据相结合的方法可以有效反演行播作物的叶面积指数。

Here lives the biggest bird in the world - ostrich; the second smallest bird in the world - Red Munia; the bird flying the highest - swan; Tufted Duck and so on. It is worth mentioning that fifty types of birds are part of the unique birds in Hainan, which are seldom seen by common tourists.

这里面有世界最大的鸟--鸵鸟；有世界上第二小的小鸟--珍珠鸟；有飞得最高的鸟--天鹅；有鸟中潜水冠军--凤头潜鸭……特别值得一提的是：其中有五十余种鸟类，都属于海南独有的鸟类或亚种，一般游客是难得一见的。

In this thesis, the process of side-chain alkenylation and cyclization reaction have been studied. NaK eutectic mixture is seldom used as acatalyst, not to mention the sonochemical treatment of it in a catalytic system.

本研究通过烯基化反应合成OTP并对其进行环化反应合成1，5-DMT，同时对反应催化剂进行表征并对反应机理进行探讨。

She seldom stay at home in the evening. She's always asked out by numberous friends.

她有很多朋友，晚上常被邀外出，因此她晚上很少在家里呆着。

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷