这种物质切莫与食物接触。
所以食物质量肯定变差了。
中国的新食品法规定了食品召回制度，如果食物质量不达标，生产商必须停止生产。
China's New Food Act provides for a food recall system where producers have to stop production if their food isn't up to standards.
这些细菌实际上就是硫化氢和二氧化碳的结合体，而这种化学反应产生的有机物质是更大的有机体的食物。
These bacteria actually combine the hydrogen sulfide with the carbon dioxide and this chemical reaction is what produces organic material which is the food for larger organisms.
大多数深海动物依靠颗粒物质作为食物，这些颗粒物质最终来自于光和作用，下降的排放口会使平流的作用相形见绌。
Most deep-sea faunas rely for food on particulate matter, ultimately derived from photosynthesis, falling vent would dwarf any contribution from advection.
日常摄入的水、食物和各类能量与输出的污水、固体废物、空气污染物、能源和经过某种转化的物质相匹配。
A daily input of water, food, and energy of various kinds is matched by an output of sewage, solid waste, air pollutants, energy, and materials that have been transformed in some way.
他们必须避免某些含有大量酪胺的食物，这种化学物质存在于多种奶酪、葡萄酒和泡菜中。
They must avoid certain foods that contain high levels of the chemical tyramine, which is found in many kinds of cheese, wines, and pickles.
与只有少数食物中含有的那些营养物质不同，蛋白质存在于所有食物中。
Unlike nutrients that are found only in a few foods, protein is present in all foods.
植物可能利用它窃取彼此的食物，或传播化学物质来攻击其他植物。
Plants may use it to steal food from each other, or spread chemicals to attack other plants.
食物中的许多化学物质是健康饮食的必要组成部分。
Many of the chemicals in food are necessary parts of a healthy diet.
我们吃的食物含有许多不同的天然化学物质。
这些化学物质和毒素在脂肪组织中生物蓄积并在食物链中生物放大。
These chemicals and toxins bioaccumulate in fatty tissue and biomagnify up the food chain.
“肥胖流行病”很大程度上归因于体育活动的减少和食物质量、饮食习惯的差异。
The 'obesity epidemic' is largely ascribed to declines in physical activity and differences in food quality and eating habits.
研究者们设置了三种不同的环境来饲养轮虫：一种是可获取食物质量相当高的环境，一种是质量低的环境，还有一种趋于两者的混合。
The researchers bred rotifers in three different environments: one in which the quality of available food was high, one in which it was low and one in which it was mixed.
有时，它会对某种完全无害的食物或其它物质产生过度反应，导致过敏反应。
Sometimes it overreacts to what should be a perfectly innocuous food or other substance, causing an allergic reaction.
其它生物技术方法已经产生了改进食物质量和一致性的生物体或者在脆弱生态系统中清理漏油和重金属的生物体。
Other biotechnological methods have led to organisms that improve food quality and consistency, or that clean up oil spills and heavy metals in fragile ecosystems.
它的价钱太便宜了，以至于人们对食物质量不再抱怨。
It was the low price that accustomed people to have no complaints about the quality of food.
到“阿波罗”计划时，食物质量和花样都进一步提高和增多。
By the time of the Apollo program, the quality and variety of food increased even further.
慎选新鲜的配料可确保我们所吃的食物质量，而比萨也不例外。
Carefully chosen fresh ingredients can ensure the quality of any food we eat, and pizza is no exception.
随着包装技术的提高，食物质量和菜单得以改善。
With improved packaging came improved food quality and menus.
从农场动物的粪便到粘性食物的物质如蜜糖，再到面粉——基本上，所有可能的东西——都被倒在新娘的身上。
Anything from farm animal poop, to sticky food substances like molasses, to flour - basically, anything available - is dumped on the bride.
即使只是以微波炉解冻食物也不安全，会促使致癌物质在食物里形成。
Even thawing foods out in a microwave is dangerous, as it leads to the formation of carcinogenic substances in the food.
辐照会残留一些不明的放射性物质在食物里面。
Irradiation leaves no traces of radioactive material in food.
任何食物对身体而言都是外来物质。
黄酮醇是植物类食物中的常见物质，在洋葱、苹果、浆果、羽衣甘蓝和西兰花中含量最高。
Flavonols are common in plant-based foods but are found in highest concentrations in Onions, apples, berries, kale and broccoli.
到这个时候，甚至健康的食物都会被转化成酸性物质，食物过敏会越来越严重。
When that happens, even healthy foods can become acidic and the food allergies will become more prevalent.
这种食物是用矿物质强化了的。
你的身体从食物中摄取这种矿物质。
而且黄色食物含有丰富的维他命，矿物质等营养素，是其它食物所不能取代的。
And the yellow food implies abundant vitamin, mineral quality etc. the nourishment vegetable is other foods to can not replace.
他说，“采集食物时，女人们必须非常熟练地选对颜色、质地和味道，以保证食物安全和食物质。”
"When gathering, women must be very adept at choosing just the right colour, texture and smell to ensure food safety and quality" he said.
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