Rats and other animals need to be highly at tuned to social signals from others so that they can identify friends to cooperate with and enemies to avoid.
老鼠和其他动物需要高度关注来自别的动物的社交信号，以便它们识别哪些是可与之合作的朋友或需要避免的敌人。
Rats and other animals need to be highly attuned to social signals from others so they can identify friends to cooperate with and enemies to avoid.
老鼠和其他动物需要对来自其他动物的社会信号有高度的协调性，这样它们才能分清哪些是可以合作的朋友，哪些是要躲避的敌人。
"I don't believe that they had a three-second memory because animals need their memory, so they build up over time knowledge of where the food is," said Roy Stokes, a student at the Australian Science and Mathematics School.
澳大利亚科学与数学学校的学生罗伊·斯托克斯说：“我不认为它们有三秒钟的记忆，因为动物需要记忆，这样它们就会随着时间的推移逐渐了解食物在哪里。”
许多的动物很需要水。
动物需要许多爱。
People and animals need oxygen to live.
人类和动物需要依靠氧气生存。
All plants and animals need water.
所有的动植物都需要水。
All plants and animals need water.
所有动植物都需要水。
All domestic animals need proper food.
所有家畜都需要适当的食物。
Plants need soil, and animals need food.
植物需要土壤，动物需要食物。
As we all know, plants and animals need water.
大家都知道，植物和动物都需要水。
Animals need to stay away from predators to survive.
为了生存，动物们需要远离捕食者。
What do human beings, plants and animals need to survive?
人类生存的条件和动植物生存的前提是什么？
Is it true that animals need reinforcement and punishment to learn?
动物真的需要强化和惩罚才能进行学习吗？
Animals need to eat many portions of plants to produce one portion of meat.
动物长一点肉需要吃掉大量植物。
To pass their genes along to the next generation, most animals need to partner.
为了将基因遗传给下一代，大多数动物都需要配偶。
Animals need cover to hide from their natural enemies and to raise their young safely.
动物需要用植物来掩护自己以躲避天敌和安全地抚育自己的孩子。
Well, we have to let you go since our timer is beeping up and our animals need to be attended.
好了，我们得让您自己浏览了，因为我们的记时器在催促了，还有那些实验动物也需要检查了。
D. Monkeysand other social animals need to learn behaviors appropriate for their social groups.
原句中，前面是论点后面是论据，学习合适的社会行为对群居物种很重要，举猴子的例子。
Hunting animals need hunting grounds. And that inevitably brings them in conflict with humanity.
肉食动物需要捕食场地，但这与人类活动不免发生冲突。
D. Monkeys and other social animals need to learn behaviors appropriate for their social groups.
原句中，前面是论点后面是论据，学习合适的社会行为对群居物种很重要，举猴子的例子。
As we all know, plants and animals need water. So do the people's life and production, life couldn't go on without water.
正如我们所了解的，动植物需要水，人类的生产生活也需要水。没有水便没有生命。
All plants and animals need nitrogen. Nitrogen is a major element in the proteins in our bodies. The atmosphere is mostly nitrogen.
所有动植物都需要氮。氮是人类身体中蛋白质的主要组成部分。大气中也主要是氮气。
Different types of plants and animals need different conditions to grow well in and there is a variety of types of farming around the world.
不同种类的植物和动物需要在不同的生长条件，因此世界各地有各式各样的农场经营方式。
Reduced reliance on chemicals in agriculture is part of the solution, says Buchmann, since all animals need their immune systems in top shape to combat pathogens in their environment.
布克曼认为，减少对化学物质的依赖也是部分的解决之道，因为为了对抗环境病原体的侵入，所有动物的免疫系统都要保持最佳状态。
动物不需要它们。
动物不需要它们。
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