They were an easily found and plentifully available food source in farming areas, especially for poor immigrants.
在农业地区，特别是对贫穷的移民来说，它们是一种很容易找到的、丰富的食物来源。
If something happens to their food source, they have a way of not starving to death until they find more algae to eat.
如果食物来源发生了变化，它们有办法在找到更多的藻类食物之前不饿死。
So if something happens to their food source, they have a way of not starving to death until they find more algae to eat.
所以如果它们的食物来源发生了变化，它们就有办法在找到更多的藻类食物之前不被饿死。
The report found that although some king penguins may be able to relocate to new breeding grounds closer to their retreating food source, suitable new habitats would be scarce.
该报告发现，尽管一些帝企鹅可能能够迁移到离它们日益减少的食物来源更近的新繁殖地，但合适的新栖息地将会变得稀缺。
In Ireland, potatoes have been an important food source for hundreds of years.
数百年以来，马铃薯一直是爱尔兰的主要食物来源。
In today’s world, you can always find out how many calories any food source contains.
现在，任何食物来源你都可以找到它们的卡路里含量。
The coffee has the added benefit of not being a food source, like palm oil and soybeans.
棕榈油和大豆油是人们的食物来源，而用咖啡作燃料的另外一个好处就是它不是食品来源。
Medium-sized mammals, such as beaver and snowshoe hares, can be an important secondary food source.
一些中等的哺乳动物，比如海狸以及北美野兔也是它们重要的第二食物来源。
Grizzly bears have found this food source and scraps between the different bears have been witnessed.
灰熊已经发现这个食物来源，这里已经发现不同的熊的足迹。
With high protein content, and the ability to breed fast, the snail was seen as an ideal food source.
由于这种蜗牛含有丰富的蛋白质，繁殖速度快，因此被认为是一种理想的食品来源。
A well-made pizza not only looks, smells, and tastes great, but it is a wise choice for everyone as a regular food source.
制作精巧的比萨不仅色、香、味俱佳，而且是大家日常食物来源的一个聪明选择。
In July, stool samples confirmed E. coli as the cause of illness, though the exact food source of the bacterium was not confirmed.
今年7月，粪便样本证实病因是大肠杆菌，但病因菌确切的食物来源，还没有得到确认。
It's been so processed and treated and preserved — it's been taken so far away from any food source that the nutrients12 are gone.
它经过如此的加工、处理和保存工序它从遥远的食物生产地运来这里，以至失去所有营养。
But to the Philippines’ mallard duck farmers, the golden snail is an important food source – a good alternative to expensive commercial feed.
—对菲律宾的水稻种植者来说，黄金蜗牛是啮食稻田、破坏作物的害虫；但对绿嘴鸭养殖者而言，黄金蜗牛却是重要的饲料来源，可以替代昂贵的商业饲料。
New York's crowded quarters force restaurants to store trash indoors until it can be collected, providing rats with an indoor food source.
纽约房屋过于拥挤，导致餐馆垃圾无法及时输出，为老鼠在餐馆内寻找食源提供便利。
Besides microorganisms' actions in fermentation AS agents of physical and biological change, they themselves can be used AS a food source.
微生物除了发酵中作为物理和生物学变化的试剂外，它们本身也能被用作一种食物来源。
The collapse of the world's fisheries due to overfishing, for example, has devastated seabird populations that have lost their main food source.
例如，世界渔业的衰退便是由于过度的捕捞，因为主要食物来源的减少，也导致海鸟数量的急剧下降。
In particular, Dr Dorigo was interested to learn that ants are good at choosing the shortest possible route between a food source and their nest.
Dorigo博士尤其饶有兴趣的了解到，蚂蚁擅长于在食物所在地和巢穴之间选择最短的可能路线。
Armed with the latest evolutionary accoutrement, ancient algae had it made — an everlasting food source and all the world's oceans to expand into.
有了这个最新的进化武器，古代海藻创造出了不尽的食物来源，并向全球海洋扩张。
But gulls can live up to 25 years and with an endless food source at nearby landfills and baseball parks, she says there's only so much they can do.
但是，海鸥的寿命一般可以长达25年，加上附近的垃圾填埋场和棒球场里，有无穷的食物来源，她说，他们可以做的也就只有这么多了。
Polar bears cannot survive without sea ice, using it to raise their young, to travel and as a platform for hunting seals - their primary food source.
没有海冰，北极熊就无法生存。它们需要利用海冰来抚养幼仔，四处漫游，并以此为平台捕猎它们的主要食物，海豹。
One, the "swollen thorn acacia, " learned to encourage a species of ant to monopolize it as a food source and kill or run off all other predators.
其中一种“巨刺金合欢（即牛角相思树）”学会了如何诱使一种蚂蚁为独占自己而杀死或驱赶其他的掠食者。
That suggests that the bacteria are indeed at work. Presented with a sudden food source, they are gobbling away, using lots of oxygen to digest it.
但说明细菌的确起了作用，面对一大堆突然出现的食物，它们需要很多氧气才能消化。
Codependence is not only of the physical, where one is dependent upon another kingdom as food source, or dependent upon the job to pay the rent and food.
相互依赖不仅是物质体的，在其中一个人依赖另一个王国作为食物源，或依赖工作去付房租和食物。
Nettles are key to the survival of butterflies, as they are the primary food source for many caterpillars including those of the comma, tortoiseshell and peacock.
荨麻是蝴蝶生存的关键。它是很多幼虫包括蛱蝶科的如花斑蛱蝶，孔雀蛱蝶等的食物来源。
Nettles are key to the survival of butterflies, as they are the primary food source for many caterpillars including those of the comma, tortoiseshell and peacock.
荨麻是蝴蝶生存的关键。它是很多幼虫包括蛱蝶科的如花斑蛱蝶，孔雀蛱蝶等的食物来源。
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