Holly leaves on lower branches have more spines than leaves on upper branches. This is because the lower branches are easier for most animals to reach.
冬青属类植物离地面较低的的叶子的刺比例地面较高的叶子的刺多的原因是为了抵御较低的叶子更易受大多数动物的袭击。
So, the words we use for most animals raised for food, such as ox, cow, sheep and pig, come from old English, while the words for the meat people eat come from French: beef, mutton, pork and bacon.
所以，表示饲养食用动物，如公牛，母牛，羊和猪时，我们使用了古英语的单词；而像牛肉，羊肉，猪肉和熏猪肉这些人们吃的肉类的单词却源于法语。
The harsh conditions in deserts are intolerable for most plants and animals.
沙漠中的恶劣条件对大多数植物和动物来说是无法忍受的。
This would mean that they wouldn't have to spend most of their waking time searching for food, as most animals do.
这意味着它们不需要像大多数动物那样，把大部分清醒的时间都花在觅食上。
I have been terribly disappointed, for this child has brought the most frightful animals into the house.
我非常失望，因为这个孩子把最可怕的动物带到家里来了。
For a start, all animals, such as cows, pigs and sheep, always gas limed methane, which is the second most common green house gas after carbon dioxide.
首先，所有的动物，如牛、猪和羊，总是排出石灰甲烷气体，这是继二氧化碳之后第二常见的温室气体。
One day, the cat's-meat-man said to him, "Why don't you stop being a doctor for people and become a doctor for animals instead? I'm sure that you know a lot about animals-more than most vets. You wrote a wonderful book about cats. I'd send all the people with sick dogs or cats to you."
一天，卖供猫食用的肉的商贩对他说：“你为什么不停止为人类看病，转而为动物看病呢？我相信你对动物的了解比大多数兽医还要多。你写了一本关于猫的好书。我会把所有带着生病的猫狗的人都送到你这里来。”
Unlike most terrestrial animals, aquatic animal species used for human consumption are poikilothermic, meaning their body temperatures vary according to ambient temperatures.
与大多数陆地动物不同，供人类消费的水生动物为冷血品种，也就是说它们的体温会根据环境温度而变化。
"If their eyes were made of protein" -which is the case for humans and most other animals - "they would get worn right away," Speiser said.
如果它们的眼睛是由蛋白质构成的(包括人类在内的大多数动物都是如此)，那它们会很快被磨损。
Today, people, animals and their products travel around the earth faster than the incubation period for most known pathogens, he says.
他说，人、动物以及动物产品目前在地球上旅行的速度快于大多数已知病菌的潜伏期。
Also in the quake area, three giant pandas were reported missing from the Wolong nature reserve, the world's most famous reserve for the endangered animals.
在地震区，还有三只大熊猫从卧龙自然保护区失踪。大熊猫是世界上最著名的濒危保护动物。
In fact, the anemones showed more consistency than most other animals tested for personality in the wild.
实际上，在野外海葵比许多其它动物测试展示了更多个性化反应的一致性。
Like humans, most animals rely on visible light for seeing, and plants rely on it for photosynthesis.
和人类一样，大多数的动物需要依赖可见光才能看见东西，而植物则需要光来进行光合作用。
In most animals, the trachea (the passage for air) and the esophagus (the passage for food) are oriented such that the esophagus is below the trachea.
在大多数动物身上，气管和食管是分开的，食管在气管的下面。
Animals on the prowl for sustenance must constantly decide which tree has the most fruit, or which patch of flowers will contain the most nectar.
觅食的时候，动物们必须持续地判断哪棵树上的果实最丰硕，哪朵花里的蜜汁最充盈。
For most of human history, the labor of men and animals was the sole source of energy, and that placed significant limits on how much energy we could use.
回顾历史，能量大部分时间只能通过人畜的劳力获取，使能源及其使用非常之少。
But for most flowering plants, the intermediaries are animals.
至于花卉，它们大多数的媒介是动物。
"Most animals are designed for speed, for power, not for endurance," Lieberman explains, as we make a turn onto the bridge.
“大多数动物是为速度与力量而优化设计的，不是按照耐力设计的，”我们在桥上转弯时，利伯曼解释说。
All the animals quickly agreed that the most important thing to do was to find out what had become of the heat, for without heat their sufferings would never end.
动物们一致认为，没有热，他们的痛苦将永远没有尽头；现在最重要的事就是弄明白热是怎么消失的。
Unlike most safari-goers who only get to look at the animals, Earthwatch gives travelers the chance to get up close and personal as they catch and tag wild zebras for research.
不同于多数只能观赏动物的狩猎旅游者，“地球观察团”在游客为了研究而抓住野生斑马并给它们上卷标时，给予他们一个接近这些动物的亲密机会。
Game drives are the backbone of most safaris, with the idea being to spend as many hours as possible in the bush searching for animals.
驱车观赏野生动物是大多数萨法利的核心内容，要尽可能有较长时间滞留在丛林中搜寻野生动物。
When most people think about animals, they imagine furry little cow-eyed creatures innocently plucking leaves from trees or bugs from the ground for nourishment.
当人们提到动物时，会长着小母牛眼的毛皮生物不小心将叶子从树上扯下来，或是地面上的昆虫正在觅食。
Since ancient times, there have been many stories of animals saving human lives. Most scientists or research experts, after observing animals for some time, appeal for their protection.
从古至今，动物救人的传说时有听闻，许多与动物接触过的科学家或研究者在观察动物一段时间后，大多会提出保护动物的呼吁，为什么呢？
For years, residents of Minamata, a town located on Kyushu (Japan's most southwesterly island), had observed odd behavior among animals, particularly household cats.
多年来，坐落于九州(日本最西南岛屿)小镇水俣的居民总是能观察到动物的古怪行为，特别是家养的猫。
He will be paired for breeding, perhaps adding to the population of one of the world's most beloved and endangered animals.
它将被配对饲养，也许会为这个世界上最受人喜爱但也最濒危的物种家族添丁进口。
Humans may be called "naked apes," but most of us wear clothing, a fact that makes us unique in the animal kingdom, save for the we make for other animals.
人类可能还有另一个绰号“裸猿”，不过大多数人都穿着衣服。这也使得我们在动物界独树一帜。
While iron is necessary for all animals (and indeed most life), in high doses it can be toxic.
然而铁对所有动物（实际上是对大多数的生命）都是必需的，在铁的剂量高时，它可能是有毒。
Most spiders are solitary creatures but some are social animals for all or a part of their lives.
大部分蜘蛛是独居的，另外有些一生或一段时间群居。
For example, most people throughout the world know of the kangaroo and the koala but not many people know why these animals only exist in Australia.
例如，全世界大部分人都知道袋鼠和树熊，但知道为什么这些动物只长在澳大利亚的人并不多。
For example, most people throughout the world know of the kangaroo and the koala but not many people know why these animals only exist in Australia.
例如，全世界大部分人都知道袋鼠和树熊，但知道为什么这些动物只长在澳大利亚的人并不多。
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