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For long time in our country the main source of the raw material was Dioscorea nipponica Makino in wild.

长期以来我国穿山龙的原料主要来源于野生。

Organism aging comes from cell aging, so study on diploid cell line is helpful to research the mechanism of aging.

机体的衰老来源于细胞的衰老，对二倍体细胞的研究有助于衰老机理的探讨。

Make a formal retraction or disavowal of previously held statement or belief

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In this article, a comprehensive study is made on economic basic of legal liability caused by action that causes environment diseconomical from the aspects of coming into being of theory of diseconomy of exterior environment caused by environment action, the economic basic that government intervenes environmental action that cause environment degenerated.

依法保护和改善已遭受污染和破坏的环境已成为各国的共识，法律作用的有效性来源于法律责任的规定与落实。作为上层建筑之一的环境法律责任，它的产生、发展和完善与其经济学基础息息相关。

Now and then we hear a dissenting voice. Here is a breath of fresh air from an unexpected quarter.

现在，我们终于听到了一把不同的声音，那些新鲜的观点却来源于一个我们意料不到的角落。

Our group have done considerable experimental and theoretical investigations on multi-photon interference and distinguishability characterizations.

多光子干涉实验和理论的研究光子的干涉来源于不可区分性，多光子间的可区分性相比双光子间的可区分性要复杂得多。

The Electronic Map is scanned into computer. Since the source of the images is different, and there is angle, geometry distortion and even different resolving rate between the images, these factors add the difficulty of image match.

由于电子地图来源于纸质地图的扫描，它与遥感影像图生成的机理不一致，又存在着一定的角度失真和几何形变问题，甚至它们的分辨率也不一样，从而增加了配准的难度。

When he failed to heal their disputes by his exhortations, he determined to give them a practical illustration of the evils of disunion; and for this purpose he one day told them to bring him a bundle of sticks.

当这个父亲通过自己的劝告让他们和解却失败了，他想给他的儿子们一个证明邪恶来源于分离；为了这个目的，一天他告诉他的儿子们给他拿一捆柴。

Photo shot on assignment for "Dominica," June 1990, National Geographic magazine

照片来源于《多米尼加》1990年6月，国家地理杂志

Melanin from cheese and other food contained tyrosine, in the body under the action of enzymes, tyrosine into DOPA and then oxidation, the final polymerization into melanin.

黑色素来源于奶酪等食物内所含的酪氨酸，在体内酶的作用下，酪氨酸转化成二羟苯丙氨酸，然后氧化，最后聚合成黑色素。

Fancy gold-plated dangling earrings with facetted White Opal crystals.

花式镀金悬垂耳环与facetted白欧泊水晶。

This essay chooses the study aim from biology teachers in middle school in Shi Jiazhuang which tells us that most of the middle school biology teachers in Shi Jiazhuang have the"burnout", lower successfulness, individualize.

本文选取石家庄市初中生物教师作为研究对象，运用问卷调查的方法对石家庄市初中生物教师职业倦怠的现状进行调查，调查结果发现，石家庄市初中生物教师这一群体普遍存在职业倦怠，情感枯竭程度偏高，成就感偏低，去个性化程度最为严重。