他们认为，这样的饮食不包括任何动物来源的产品，会缺乏我们身体所需的许多必要的维生素和矿物质。
They believe such a diet which includes no products from animal sources can be deficient in many of the necessary vitamins and minerals our bodies need.
胆固醇也是一种油脂，存在于动物来源的食物中。
Cholesterol, a type of lipid, is found in foods from animal sources.
酶来源于动物、蔬菜或微生物。动物来源包括猪和牛。
The enzymes can be derived from animal, vegetable, or microbial sources.
公认动物来源的质量有很大变化，因次研究上的差异性不足为奇。
It is recognized that the 'quality 'of animal protein sources varies enormously, so it is of little surprise that there is disparity between studies.
卵磷脂是一种乳化剂，它存在于植物(例如：大豆)、鸡蛋黄和其他动物来源中。
Lecithin is an emulsifier. It is found in plants such as soybeans, in egg yolks and in other animal sources.
事实上一些绝对的素食主义者排斥动物来源的所有产品——不仅仅是食物，而且还有皮革、毛发和丝。
In fact, some vegans avoid all products with animal origins-not just foods, but also leather, wool and silk.
黑芝麻色素属于天然黑色素系列，其组成与结构不同于动物来源色素，其结构至今尚不明确。
Melanin in Black Sesame is a kind of natural melanin. Its composition an structure is different from melanin derived from animals, and its structure is not confirmed till now.
反对野生动物交易联盟正致力于减少濒危野生动物及其身体部分的需求，而且会起诉那些偷猎和提供野生动物来源的人。
Against wildlife Trafficking aims to reduce the demand for endangered wildlife and wildlife parts and to prosecute the poaching and supply of this wildlife.
人们开始越来越多地使用脱水后的动物粪便作为替代燃料，这同样会损害土壤，因为这些珍贵的土壤改良剂和植物养分的来源将无法再回归到土壤之中。
The increasing use of dried animal waste as a substitute fuel has also hurt the soil because this valuable soil conditioner and source of plant nutrients is no longer being returned to the land.
他们提供的数据表明，洞穴壁画中描绘的动物大多受到画家们偏爱，它们是肉类和兽皮等材料的来源。
The data they present suggest that the animals portrayed in the cave paintings were mostly the ones that the painters preferred for meat and for materials such as hides.
这是一项重要的发现，因为通过学习耕作土地，饲养动物，就可以有稳定的食物来源。
This was an important discovery, because by learning to cultivate the land, and care for animals, mankind would always have food steadily.
他们想了解不同种类动物之间的区别、来源地以及生活方式。
They want to learn about the difference between different kinds of animals, where they come from, and how they live.
当树中空或部分死亡时，它为小动物提供了一个家，也成为了许多其他动物的食物来源。
When a tree becomes hollow or part of it becomes dead, it provides a home for small animals and is a source of food for many other animals.
尽管动物养分可能是高质量或比蔬菜来源的食物更加容易吸收，但拥有一个健康的素食膳食是可能的。
Although nutrients from animals may be of higher quality or more readily absorbed than vegetable sources, it is possible to have a healthy vegetarian diet.
动物靠信息素来提醒同类诸如求偶、食物来源、危险等信息。研究人员假设信息素在人类行为中也起了一定作用。
We know that animals use pheromones to alert their peers of things like mating, food sources, and danger, and researchers hypothesize that pheromones can play a role in human behavior as well.
它的来源来自植物、动物或者其他物质，例如真菌类或者像酒等发酵产品。
It can be derived from plants, animals or other categories such as fungus or fermented products like alcohol.
正如埃克斯所说，不能忽视对祭司们的主要生活来源-动物祭祀的直接攻击。
As Akers argues, the direct attack on the Priests' principal source of livelihood, the animal sacrifices, could not be ignored.
这往往很难确定是否发生了人际传播，因为家庭成员都暴露于同样的动物和环境来源并且彼此接触。
It is often impossible to determine if human-to-human transmission has occurred since the family members are exposed to the same animal and environmental sources as well as to one another.
大象是原始来源，但是该业务已经扩展到其它草食性动物了。
Elephants were the original source, but the business has since expanded to other non-meat-eating animals.
所有动物、家禽、鱼或蛋类来源的蛋白都在癌症的形成和扩散过程中起一定作用，其中，酪蛋白起的作用最为重要。
All animal, bird, fish or egg derived protein plays a role in the formation and promotion of cancer, but the most potent so far is casein.
肉类最常见的来源是驯养的动物品种，如牛、猪和家禽，其次是水牛、绵羊和山羊。
The most common sources of meat are domesticated animal species such as cattle, pigs and poultry and to a lesser extent buffaloes, sheep and goats.
植物、矿石、一些动物或者昆虫，只有这些有限的来源能做染料。
Plants, minerals and a few animal or insect life were the only means with which to make dyes.
线粒体是动物细胞的能量来源，把氧和一种葡萄糖代谢产物转换成三磷酸腺苷（ATP），ATP是用来存储化学能量的一种细胞内化合物。
Mitochondria are the powerhouses of animal cells, converting oxygen and a metabolic product of glucose into ATP, a molecule that cells use to store chemical energy.
有些零售商有自己的立场，他们会保证自己的品牌食品来源于被善待的动物。
Some retailers have their own standards which guarantee a level of animal welfare in the production of their own-brand food.
甚至于那些习惯于每天吃肉的人，也意识到肉类并非人体必须的营养来源，为此养殖几十亿动物，其道德含义发人深醒。
Now more than ever, everyday meat eaters are considering the moral implications of raising billions of animals for food that our bodies can easily do without. " We don't need to eat it, "Dr.
甚至于那些习惯于每天吃肉的人，也意识到肉类并非人体必须的营养来源，为此养殖几十亿动物，其道德含义发人深醒。
Now more than ever, everyday meat eaters are considering the moral implications of raising billions of animals for food that our bodies can easily do without. " We don't need to eat it, "Dr.
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