天然的物质

A naturally present chemical in men's sweat may act as a primitive love potion that increases their attractiveness in women's eyes, says a new study.

一种存在于男性汗液中的天然物质可以充当原始的爱液，提升在女性眼中的形象吸引度。

This study may pave the way to preliminary establish a new kind of CRMs suitable for quality control of solid sampling microanalysis.

本工作将为研制适用于固体取样的微分析质控天然基体的标准物质提供一个可能的途径。

In Europe, propolis has been known as the "miracle drug", and by scientists as the "twentieth century will find the greatest natural material."

在欧洲，蜂胶被称为"神奇的药物"，同时被科学家誉为"二十世纪人类发现的最伟大的天然物质"。

objective to sodium carboxy methyl cellulose and glycerol as gel matrix ingredient and kelp and motherwort extract condensate made uniform gels, the greatest degree of reserves of natural beauty material components to play the efficacy of beauty.

目的 以羧甲基纤维素钠和甘油作为凝胶基质主要成分与海带浸膏及益母草提取液制成均一凝胶剂，最大程度的保留美容物质的天然成分使之发挥美容的功效。

Chitosan, a kind of natural polymer derived from arthropod shell, belongs to nonpoisonous and pollution-free security animal hormone substance.

天然聚合物壳聚糖是由节肢动物的外壳提取的、无毒、无污染的动物源激素物质。

Fertilizer: Natural or artificial substance containing the chemical elements that improve growth and productiveness of plants.

肥料：含有促进植物生长和增产的化学元素的天然或人造物质。你应该利用一切机会提高你的英语水平。

Previous research has suggested that the true producers of numerous natural products isolated from marine invertebrates were the microbial epibiont and symbiont which are deemed as not-yet-cultivated microbe.

对海洋无脊椎动物天然产物的研究表明，很多种活性物质的真正生产者是与其共生或附生的未培养微生物。

Modern medicine confirmed that the B-Kudingcha acid-containing resin alcohol,蛇麻lipid alcohol, wood Kok,桷Paper-natural selenium-containing amino acids, such as more than 250 kinds of health medicinal substances, for its flavonoid content This tea味苦, sexual-ping, is the bitter food treasures (Fresh Five, are beneficial to the human body, generally at least to the bitter water, and its role is great).

现代医学证实，苦丁茶内含果酸B—香树脂醇、蛇麻脂醇、木角、桷皮素、天然硒化含物、氨基酸等250多种保健药用物质，其黄酮含量为绿茶的1.6~14.7倍，而咖啡碱含量仅为绿茶的1%。本茶味苦、性平，是苦味食品中的珍品（人食五味，皆有益于人体，一般以苦味食之最少，而其作用却很大）。

Cysteamine exists in the living animals and plants, owing to sulfhydryl and amido it has special biological function to participate in the normal metabolic process , for example, the decreasing of Somatostatin, the influence of the synthesis and the excrete of GH, etc .

半胱胺是天然存在于动物、植物和人体内的生理活性物质，含有活性的巯基和氨基具有特定生物学功能，参与正常代谢过程，如降低机体生长抑素（Somatostatin，SS）水平 [2，3]，影响GH的合成和分泌等[4]。

Secondly, ecological meaning of geotectonics is provided based on the rule of geotectonics being one of the energy source of eco-environment.

并对生态环境进行了较为严格的定义，即生态环境是以人类种群为主体的，以物质、能量和信息等有机联系维持人类生态系统正常运转的天然生态系统。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。