naturally occurring

1. The oil is attacked by naturally occurring microbes which break it down.
   原油受到了自然产生的分解油类物质的微生物的侵蚀。
2. Oil is refined to remove naturally occurring impurities.
   油经过提炼去除天然存在的杂质。
3. Aflatoxin is a naturally occurring mold, and one of the most carcinogenic substances known.
   黄曲霉素是一种天然霉菌，且是已知的最具致癌性的物质之一。
4. While they also tried their best to explain naturally occurring phenomena, what concerned them most were social issues.
   尽管中国哲学家们也尝试着解释一些自然现象，然而他们最关注的还是社会问题。
5. The naturally occurring alpha hydroxy acids will help to gently whiten and brighten and leave you looking good.
   天然的-羟基酸的产生会帮助牙齿亮白，让你更神采奕奕。
6. All appear to be damaging because they're added sugars, as opposed to naturally occurring ones, like those in actual fruit, which are not problematic.
   这些似乎都是有害的，因为它们是添加糖，和天然的糖不一样，比如，在真正的水果中的糖是没问题的。
7. Children as young as three believe human-made objects are owned but naturally occurring things like pinecones are not.
   三岁大的小孩相信人造的物品是被拥有的，而天然的物品，例如松果，却不是。
8. Naturally occurring skin colors accent each other perfect no matter your skin tone.
   不管你是什么肤色，自然的肌肤色都会彼此突出强调。
9. Radiance is so pervasive that geologists have uncovered evidence of 14 naturally occurring nuclear reactors.
   辐射无处不在，地质学家们甚至已经发现了14处天然核反应堆存在的证据。
10. Certain mutations-naturally occurring changes-in that gene keep people from feeling pain.
    特定基因突变自然发生的改变导致人类感受不到疼痛。
11. Interferon is a naturally occurring protein that stimulates the immune system, available in various manufactured forms.
    干扰素是一种刺激免疫系统的分泌蛋白，有各种各样的人造形式。
12. The site contains the three active centers found in the naturally occurring enzyme: an organic molecule called phenol, an iron atom and a copper atom.
    这个位点包括了自然酶中发现的三个活性中心：一个有机分子苯酚，一个铁原子和一个铜原子。
13. Passive sensors can only be used to detect energy when the naturally occurring energy is available.
    被动传感器只能被用来检测能源当自然产生的能量是可用的。
14. Radon is a chemically inert, naturally occurring radioactive gas without odour, colour or taste.
    氡是一种自然产生的放射性惰性气体，它无色、无味、无臭。
15. Pharmaceuticals usually are chemicals synthesized from organic compounds found in naturally occurring substances such as plants, bacteria and fungi.
    药物通常是从天然物质诸如植物、细菌和真菌中的有机化合物合成的化学物质。
16. Vitamin E is a naturally occurring fat-soluble vitamin found predominantly in plant foods and some animal foods.
    维生素E是一种天然存在的脂溶性维生素，主要存在于植物类食品以及一些动物类食品。
17. As with naturally occurring poliovirus, the only protection against cVDPV is full vaccination.
    与自然出现的脊髓灰质炎病毒一样，防范cVDPV的惟一方法是充分免疫接种。
18. Background: Erythropoietin is a naturally occurring hormone with multiple effects on a number of different cell types.
    背景资料：促红细胞生成素是一种天然存在的激素，对能对各种不同的细胞发挥多种作用。
19. Naturally occurring or prepared water that contains dissolved mineral salts, elements, or gases, often used therapeutically.
    含有溶解的无机盐，矿物成分或气体的天然水或人工合成的水，通常用于治疗某些疾病。
20. Naturally occurring rock oil is referred to as crude oil or petroleum.
    天然形成之石油，我们称作原油或石油。
21. Naturally occurring in animal and vegetable tissues; an important energy source forming much of the fat stored by the body.
    天然存在于动物和植物组织中，重要的能量源，形成体内储存的大量脂肪。
22. The process uses small amounts of the naturally occurring mineral to increase concentrations to no more than one part per million typically.
    这一过程应用了少量的自然出现的矿物质去增加浓度，不超过百万分之一。
23. It is derived from oleanolic acid, a naturally occurring substance found in many plants.
    它源自齐墩果酸&一种存在于多种植物中的物质。
24. Now researchers have identified a naturally occurring molecule in humans that blocks this process, prolonging the effect of opiates.
    现在研究者已经识别出一种人体自然产生的分子，它可以阻滞这个过程，延长阿片类药物的疗效。
25. Pathorphological observation of naturally occurring and experimental pullorum disease of chicks was conducted.
    对自发性和实验性雏鸡白痢病进行了病理形态学观察。
26. Cis monounsaturated fat is naturally occurring and is particularly high in canola and olive oil.
    顺式单不饱和脂肪酸天然存在，特别富含于芥花籽油和橄榄油中。
27. Folate is the naturally occurring form of the vitamin that is found in food.
    叶酸是认为在食品中的天然维生素形式。
28. The cocoa bean is a rich source of naturally occurring polyphenol antioxidants.
    可可豆是多酚抗氧化剂的一个富有的来源。
29. Any repetitive motion involving the fingers can amplify the effects of naturally occurring cartilagedecay.
    包括手指在内的任何一个重复性的动作都会比自然发生的软骨衰退效果严重。
30. Antibiotic resistance arises through mechanisms such as selection of naturally occurring resistant mutants and horizontal gene transfer.
    抗生素耐药性通过天然抗突变的选择和基因水平转移而产生。

adj

1. existing by nature and without artificial aid
   1. one of the 93 naturally occurring chemical elements