以收集食物为例。
味觉是一个主观因素，我们通常不会以食物为对象进行偏好测试。
Taste is such a subjective matter that we don't usually conduct preference tests for food.
随着野兔密度的增加，这些树枝的数量减少，迫使野兔以低质量的高纤维食物为食。
As hare density increases, the quantity of these twigs decreases, forcing the hares to feed on low-quality high-fiber food.
食物被盛在以土豆为原料的盘子里，然后再喂给猪吃。
Food is being served on potato-based plates that will be fed, in turn, to pigs.
医生们以胡萝卜籽和胡萝卜根为药，其依据是味道不好的食物对你一定有益。
Doctors used carrot seeds and roots as medicine on the theory that foods that taste bad must be good for you.
和在海洋中一样，陆地上一个关键食物链，一个以树叶为基本原料的食物链似乎也崩坏了。
As in the sea, it seems that on the land one key food chain collapsed: the one with leaves as its basic raw material.
以食物为例，每种文化都有自己的地方出售传统的食物，但也有著名的小贩市场。
Take food as an example, each culture has its own place to sell their traditional food, but there are also the famous Hawkers Markets.
他们有巨大的胃容量，能够在长时间段消化食物，以较慢的速度将食物转化为能量，为以后储存。
They had enormous stomach capacity, the ability to digest food over a long period, converting it to energy at a slower pace, saving it for later.
鸟以虫为食。鸟捉不到虫就会饿。早起的鸟儿定能得到食物，因此早起的鸟儿有虫吃。
Birds feed on worms. A bird will go hungry if it cannot catch worms. The bird that gets up early is sure to get some food, so the early bird catches the worm.
许多动物喜欢以青草为食物。
那使看得见的练习，在一项新以实验室为基础的研究被发现，会帮助你吃较少食物你真的想要避免。
That visualization exercise, found a new lab-based study, could help you eat less of the foods you really want to avoid.
基本上只有以昆虫为直接食物来源的鸟类才会在冬季南迁，还有一些鸟儿只能栖息在水源和潮湿环境附近。
Typically only birds who rely on insects as their primary source of food fly south for the winter, and some birds are drawn to water and wet environments.
在很多方面，甚至娶中国姑娘为妻，食物以他们来讲也是很好的。
Many even marry Chinese girls and the food is fine for them.
这种3英尺长的鳄鱼以植物和幼虫为食，它下颚上长着一对龅牙用来挖掘食物。
This 3-foot-long croc was a plant - and grub-eater with a pair of buckteeth in the lower jaw it used to dig for food.
在较高温度生长的树叶将含有更多的纤维性物质，缺乏易于消化的蛋白质。这也意味着以树叶为食的动物需要更长的时间消化食物。
Leaves that grow in hotter air contain more fiber and less digestible protein, meaning leaf-eaters would take longer to process their food.
现在看起来这些以甲烷为基础的食物链和纯粹的无脊椎动物相比，更可能会延长生命树，可能这种情形已经持续了数百万年。
It now seems, though, that such methane-based food chains may stretch farther up the tree of life than mere invertebrates-and may have done so for millions of years.
如果你的花园里种了小茴香或者欧芹，你可能就会招来这种蝴蝶，因为它的幼虫以这些食物为食。
If you have dill or parsley in your garden you may well attract its attention for its caterpillars feed on these plants.
图7：成群的磷虾是整个南极动物食物链的基础。 它们以浮游生物为食，生长在海冰的上层。
Photo 7 ：Swarms of krill, a cornerstone of the entire Antarctic food chain, feed on phytoplankton that grows on the underside of sea ice.
这次试验中，传染病感染的老鼠以蛋白质、糖类和脂肪含量不等的食物为食。
In this experiment, infected mice were fed on diets that contained variable amounts of protein, carbohydrate and fat.
这个研究以人们对他们所吃食物的回忆为基础，其中有可能出错。
The study relied on people's memory of what they ate, which can be faulty.
酒吧和厨房以回收的木制基底，麻绳缠卷的圆柱和后部一面墙的配料为特征，在此，厨师和调酒师在创造新奇食物的之时不会感到倦怠。
The bar and kitchen feature a reclaimed wood base, twine-wrapped columns and a wall of ingredients to the rear, where the chefs and bar staff work tirelessly to create something special.
以觅食为例，一只蚂蚁发现食物并将其搬回蚁穴，蚂蚁会一路留下化学物质作为跟踪标记。
Take foraging as an example. Whenever an ant finds food and carries it back to the nest, that ant leaves a chemical trail (pheromones) along the way.
要保证他们在几年的嗷嗷待哺期得以存活，最好就是一个以合作为基础的聚居的系统，为他们提供必要的食物和保护。
The survival of the human young during their long years of dependence was best assured by a system of cooperative base camps that afforded the necessary food and protection.
有些生物存在于以甲烷为第一营养级的食物链中。甲烷是从地球内部可燃气体，通常在海底渗出。
Some creatures are part of food chains that begin with methane gas which seeps from the Earth's interior in particular places, frequently at the bottom of the sea.
不过，尽管玻利维亚人以藜麦为食已有数个世纪，但多年来在安第斯山区之外这仍然是稀罕之物，直到最近，才进驻保健食物商店，才有研究者对其展开研究。
But while Bolivians have lived off it for centuries, quinoa remained little more than a curiosity outside the Andes for years, found in health food shops and studied by researchers — until recently.
例如，如果一种作物需要保护免于遭受一种以叶子为食物的害虫的侵害，保护剂不需要在（作为粮食而收割的）作物中出现。
For example, if a plant needs protection against a leaf-feeding pest, the protective agent need not also be present in the grain (that's harvested for food).
一项以老鼠为研究对象所做的实验显示，母鼠在怀孕或授乳期食用含脂肪和糖类浓度过高的食物最终会导致幼鼠有类似的食物偏好。
An experiment conducted in rats shows that females eating diets dense with fats and sugars while pregnant or lactating ended up with offspring with similar food preferences.
我觉得让他们每天为我准备单独的食物不太容易，尤其是他们住在一个食物结构以大米、鱼肉和牛肉为主的国家。
I think it would be too hard for my them to prepare a separate meal for me every single day in a country that pretty much bases its food pyramid on rice, fish and beef.
巨无霸指数以购买力平价理论为基础。根据该理论，汇率需调整以均衡全球范围内的一篮子食物和服务的价格。
The Big Mac index is based on the theory of purchasing-power parity (PPP), according to which exchange rates should adjust to equalise the price of a basket of goods and services around the world.
巨无霸指数以购买力平价理论为基础。根据该理论，汇率需调整以均衡全球范围内的一篮子食物和服务的价格。
The Big Mac index is based on the theory of purchasing-power parity (PPP), according to which exchange rates should adjust to equalise the price of a basket of goods and services around the world.
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