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- Silver occurs natural. 银是天然存在的。
- Sugar occurs naturally in fruit. 水果天然含糖分。
- Salt occurs naturally in sea water. 盐天然存于海水中。
- According to the studies on the occurrence state of silver in the Guandi silver deposit, silver occurs mainly as independent minerals which are mainly composed of sulfide and sulfosalt. 官地银矿床银主要以独立矿物(银的硫盐矿物和硫化物)形式存在;
- Mental and physical deterioration both occur naturally with age. 随着年龄的增长,心智和体力自然衰退。
- Much higher and lower densities also occur naturally. 树木的适应范围这麽广,这点值得特别注意。
- The required abzymes occur naturally in patients with lupus. 在狼疮病人的体内,能自然生成所需要的该种分离酵素。
- The pig is the only animal in which hog cholera is known to occur naturally. 猪是已知自然发生猪瘟的唯一动物。
- Silver occurred in form of minerals in the cryptomelane,coronadite,psilomelane with minor silver absorbed in the manganese minerals. 银主要以独立矿物和离子吸附状态的形式赋存于地表锰铅矿和锰钾矿中;
- This trait is called cleistogamy and occurs naturally in some plants. 雄性不育植物无法产生有功能的花,因此不能释放可育的花粉。
- A salt that is derived from both boric acid and silicic acid and occurs naturally in dumortierite. 硼硅酸盐由硼酸和硅酸反应而得的一种盐,存在于自然界蓝线石中
- Neither metal occurs naturally in Egypt, and it seems probable that supplies of ore were imported from Persia. 这两种金属都不是在埃及自然产生,而似乎可能矿石从波斯进口。
- Ozone occurs naturally in the upper atmosphere and helps to mop up ultraviolet radiation. 臭氧自然发生在上层大气层,帮助抹去紫外线幅射。
- Such chemicals occur naturally in the body and in fruits and vegetables and are believed to neutralize free radicals. 这类化学物质在人体内与水果蔬菜中会自然产生,而且据信可以中和自由基。
- In China, MSG allergies have not been documented and the substance occurs naturally in food. 在中国,对msg过敏症一直没有正式的报道,而这种物质自然会在(他们的)食物中出现。
- It is natural for a cat to catch mice. 猫捉老鼠是本能。
- Acid had pitted the surface of the silver. 酸把银器的表面腐蚀了。
- Starch is unique among carbohydrates because it occurs naturally as discrete particles (granules). 淀粉在碳水化合物中是独一无二的,因为它作为个别微粒自然产生。
- She wore a silver chain around her neck. 她脖子上戴着一条银项链。
- It's natural to slack2 off towards the end of a hard day's work. 一天紧张工作快结束的时候有些放松是自然的。