As hare density increases, the quantity of these twigs decreases, forcing the hares to feed on low-quality high-fiber 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。
The ants therefore cultivate these fungi in their nests, bringing them leaves to feed on, and then use them as a source of food.
"因此，蚂蚁在它们的巢中培养这些菌类，用叶子喂养它们，然后把它们当作食物来源。
They prefer to stay in the cool shelter of the jungle, coming out at night to feed on the vegetation on the fringe of the jungle.
它们喜欢待在丛林凉爽的遮蔽处，晚上出来吃丛林边缘的植被。
Cattle like to feed on grass and grain.
牲口喜欢以牧草与谷物为食。
They have no native predators, no creatures that like to feed on them.
在当地它们没有天敌，也没有生物想要捕食它们。
The ivory gull often follows polar bears to feed on the remains of seal kills.
象牙海鸥经常跟在北极熊的后面吃剩下的海豹尸体。
Countless birds came to feed on the seed heads of the dried plants rising above the snow.
无数的鸟儿飞来在雪地上啄食着那些枯死植物的穗头。
They are often active late at night, possibly matching this alert period to feed on fish or squid .
它们常在晚上晚些时候活跃，可能与捕食鱼或鱿鱼的警惕时期一致。
When a currency goes into a fall like the dollar's recent plunge, the trend starts to feed on itself.
当一种货币进入如同近期美元骤降般的下跌时，趋势开始自我反馈。
As the day progressed, traders say, fear seemed to feed on itself, and people began selling stocks wholesale.
交易员说，随着时间的流逝，担忧情绪看起来在不断自我加剧，人们开始大量抛售股票。
Or you may become too vulnerable and give your power away to another power who wants to feed on your life energy.
或者你也许变得太易受攻击并且夺走了你的力量给其他的想要用你的生命能量去喂养自己的人。
They can dive some 300 feet (90 meters) to feed on the ocean floor and can remain submerged for as long as 12 minutes.
它们能潜入约90米深的海底觅食，潜水时间长达12分钟。
It is a complete misconception that the poor do not need compulsory education because they do not even have enough to feed on.
因为穷人连饭都吃不饱便认为他们不需要义务教育的看法完全是一种错误的想法。
But Sharpe thinks such a scenario is unlikely: "Bald eagles tend to feed on what's most prevalent in the environment," he said.
但夏普认为，这种局面不可能出现：“白头海雕倾向于选择最普遍的食物来源，”他说。
Without these scavenging animals, the rotting carcasses they used to feed on May pose serious disease risks to humans, Blackburn said.
Blackburn说，没有了这些食腐动物，那些腐烂的尸体可能对人类产生严重的疾病威胁。
When they're still young, he says, farmers toss animal waste in the ponds and allow the tilapia to feed on the algae bloom that follows.
它们还是鱼苗的时候，他说，农户会往鱼塘里扔动物粪便，并让罗非鱼以由此催生出的大片水藻为食。
About 10 days later, they captured more than 90 mosquitoes, placed each one in a separate vial and allowed them to feed on the honey-soaked CARDS for 2 days.
大约十天后，他们捕捉了九十多只蚊子，并将它们分开放在小瓶子里，在接下来的两天里让它们吸食蜂蜜浸透的卡片。
Remarkably, its tongue is longer than its entire body, allowing it to feed on a variety of tiny insects from small crickets to moths, spiders and even locusts.
它的舌头非常明显地比它的整个身体还长，这让它捕食到各种各样的微小昆虫，从小蟋蟀到飞蛾、蜘蛛，甚至蝗虫。
For the first time in generations there are cows on the streets of Nairobi as nomads like Isaac come to the suburbs with their herds to feed on the verges of roads.
随着像艾萨克这样来到城郊的牧人们带着牛群到路边吃草，多个世代以来，内罗比的大街上第一次有牛群出现。
Farm animals can also pollute water supplies. Animals like cattle, pigs, sheep and goats are often left to feed on grass in open fields bordered by streams or rivers.
农田动物也会污染水源。牛，猪，绵羊和山羊等动物通常在小溪或河边的广阔的草地上放牧。
The only danger is that these currency appreciations begin to feed on themselves, tempting "carry-traders" to make money by stoking the process for as long as they can.
这样做唯一的危险在于这些国家的货币升值开始形成自我循环，诱使“套息交易者”为了赚钱而竭力尽可能长时间地维系这个循环。
But the more the market retreated from its highs, the more that the selling seemed to feed on itself, with some players apparently forced out of unprofitable positions to raise cash.
但市场越从高点回落，卖盘就变得越加汹涌。一些市场人士显然是忍痛割肉，以筹集现金。
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