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The afforestation practices demonstrated that without guidance of system theory, the efficiency of the forestry production had been influenced, and the further development of silviculture was also restricted to some extent.

人工造林实践表明，缺乏系统思想和理论的指导不仅给林业生产造成了一定不利影响，同时还会限制森林培育学科的进一步发展。

I shall take the simpleminded view that a theory is just a model of the universe, or a restricted part of it, and a set of rules that relate quantities in the model to observations that we make.

我用一个简单明了的观点来说就是，理论是宇宙的模型，或是宇宙的局限的一部分，也是一套将模型中的量与我们观察到的联系在一起的条例。

Yet restricted by objective conditions, these scholars failed to realize the whole complexity of the evolvement and circulation of ancient books, resulting in some simplism on such problems as the authenticity, era of evolvement and authorship of ancient books, the historical value of specific sections, as well as the relations among different texts.

但主要由于客观历史条件的限制，"古史辨"学者们当年对古书成书和流传情况的复杂性尚不能有充分的了解，因而在对古书真伪、成书年代、作者，乃至其中某些特定内容的史料价值以及各宗古书数据之间关系等问题的研究中存在着简单化的缺陷。

In the human existence system, education plays the role of a reproduction mechanism. Through the reproduction of socius, education is restricted by the interaction between the human system and the natural system, and influence on the state of this interaction.

在人类的整个生存系统中，教育是作为人文系统的一种再生产机制而发挥其功能的，并且它以"社会个人"的再生产为中介，在影响人文系统与自然系统的相互作用的同时受到这种相互作用的制约。

However, solar sail cannot realize all formation control because the direction of the solar sail radiation pressure force is restricted to certain range.

由于太阳光压力的方向受到限制，并非所有编队控制都能利用太阳帆。

The numerical solution would be a good approximation of the original solution restricted in the computational domain.

这样我们可以将原无界区域上的定解问题约化为定义在有界计算区域上的边值问题。

The signal fluctuations, the impact of temperature on the speed of sound reasons, ultrasonic ranging system ranging accuracy improved much more restricted, This also affected the ultrasonic ranging system in a number of precision applications demanding occasions, the problem of great practical significance Research

由于信号起伏、温度对声速的影响等原因，超声测距系统测距精度的提高受到很大的限制，这也影响到了超声测距系统在一些精度要求较高的场合的应用，所以这个问题的研究有很大的现实意义。问题补充：翻译软件译的就不要再贴上来了！

This is a global project, not in any way restricted to the South African market.

这是个全球项目，不仅仅局限于南非市场。

1Systematic application is not restricted by time, subject, space and region .

系统的应用不受时间、科目、空间和地域的限制。

Because spermary innervation reachs his outside that thick the white film of pliable but strong, make be restricted strictly and its bulk cannot is out of shape easily.

由于睾丸神经分布及其外面的那层又厚又韧的白膜，使它的体积受到严格限制而不能轻易变形。

Tom: You are right, he worked hard all the time.

你是对的。他一直都是努力工作。

Take shortcomings,failures,and mockings of others as commonplace and a drive to complete oneself,hold your own opinion over the evalution and disscution divested from others,afterwards sink into the state of eliminate mistakes if any or encourge oneself being not being influenced by the sayinngs of others or having no ideas to do.

把缺点、失败及别人的耻笑等看成是一种常事，当成完善自己的动力，对别人的评价和议论自己心中有主见，做到&有则改之，无则加勉&，不为人言所左右或无所适从。