关于人类为什么哭的时候会流泪，科学家已经提出了很多理论。
Scientists have advanced many theories about why human beings cry tears.
目前，很多学者采用不同的理论和方法对信任相关理论和技术进行了卓有成效的研究，提出了很多的信任模型。
At present, by using different theories and methods, many scholars has carried out fruitful research on the theory and technology of trust and a lot of trust model has been proposed.
理论界为解决原因自由行为的可罚性，提出了很多观点，但每种观点均有缺陷。
The theories field puts forward a lot of standpoints for solving the punishability of action libera in cause, but each standpoint contains blemish.
最近研究人员提出了很多模拟真实网络演化生长的理论模型，其中一部分模型是从网络聚集生长出发的。
Recently, researchers have reported a lot of imitating real network evoluting growth model, in which a part of them are based on network aggregation growth.
但向心结构和离心结构的理论区分因先天不足，后来的语言研究者对此区分提出了很多争议。
Later researchers amused a lot of controversy about the distinction of "endocentric structure" and "exocentric structure" due to their inherent limitation of definition.
随着三维绘图软件的不断升级，几年来灯光应用提出了很多新的理论，绘图水平也有了普遍提高。
With the continuously upgrading of 3 Dimensional drawing software, many new theories on lighting application have been put forward in the past few years with increase drawing capability in general.
本文对粗糙集理论作了进一步的扩充，提出了众数粗糙集模型，并将该模型应用到医用物理学习动机因素与效果关联性分析中，取得了很多有意义的结果。
The modal of mode rough set is raised and the modal is applied to motive factor on medical physics learning and on the analysis of effect relativity, and many significant results are obtained.
同传统工业经济相比较，网络经济有很多新的特征，这也对传统经济学理论提出了挑战。
Compared with the traditional industrial economy, network economy has some new characteristics, which poses challenges to the traditional economic theory.
一系列的研究提出了很多富有解释力的理论，同时也发现了大量的值得争论的证据。
Series of studies made a lot of explanatory and powerful theories, but also found a great deal of evidence worthy debating.
而西方教育心理学的最新教学理论——建构主义理论，在教与学两方面都有很多独特的见解，对传统教学理论提出了挑战。
The latest teaching theory of western educational psychology—the constructivism, with many unique opinions both in teaching and learning, has posed a challenge to the traditional teaching theory.
近代的学者提出了很多有关人体衰老的医学理论，他们的理论都指出了导致人类衰老的各种因素。
A number of medical theories on anti-aging have been suggested to point out the factors contributing to aging of human body.
近代的学者提出了很多有关人体衰老的医学理论，他们的理论都指出了导致人类衰老的各种因素。
A number of medical theories on anti-aging have been suggested to point out the factors contributing to aging of human body.
应用推荐