Aggression is a kind of innate survival mechanism, an instinct for self preservation, that allows animals to defend themselves from threats to their existence.
攻击性是一种天生的生存机制，一种自我保护的本能，使动物能够保护自己不受生存威胁。
The researchers explained that the study demonstrated when we are in a novel environment the brain partly remains alert so that humans can defend themselves against any potential danger.
研究人员解释说，这项研究表明当我们处于新环境，大脑会保持部分警觉，这样人类就能在各种潜在的危险中保护自己。
All our officers are trained to defend themselves against knife attacks.
我们所有的警察都接受过自卫训练，能够对付持刀袭击。
Ants defend themselves by biting or by stinging.
蚂蚁通过咬和刺来保护自己。
Many of the indigenous plants aggressively defend themselves.
很多本土植物为保护自己而有攻击性。
But plants can defend themselves by using both physical and chemical means.
但植物也能用物理和化学方法来保护自己。
The crabs defend themselves by carrying tiny stinging sea anemones in their claws.
螃蟹进行辩护，在他们的小爪子海葵刺痛自己。
Animals use their claws or talons to catch prey, climb trees, and defend themselves.
动物使用爪子来捕获猎物，攀爬树木和自我防御。
At least that's the scheme some plants have developed to defend themselves from leaf eaters.
至少一些植物就采用了这个计划来保护自身免于食草动物的伤害。
The Israelis are now saying they won't take risks for peace if they can't defend themselves.
以色列人宣称，如果他们不能保卫自己的安全，他们不会冒险寻求和平。
Though one may be overpowered, two can defend themselves. A cord of three strands is not quickly broken.
有人攻胜孤身一人，若有二人便能敌挡他。三股合成的绳子，不易折断。
The bill would infringe upon the ability of law-abiding citizens to defend themselves and their families.
这项法案会限制守法公民自卫和保护家人的能力。
People in Europe have long been concerned about having enough children to field an army and defend themselves.
欧洲人看重的是生更多的孩子去参军，去抵御外敌。
They must also hire lawyers to defend themselves against attacks by other lawyers on a playing field built by lawyers.
它们还要在受到其他律师攻击时聘请律师为自己辩护，而这唇枪舌战的比赛场地依然是律师们自己搭建的。
Females should use sharp argument and good working ability which are all turned by rich knowledge to defend themselves.
全部由富有的知识转动保护自己的女性应该使用锋利的论据和好工作能力。
All pangolins can roll themselves into a ball to defend themselves. The cutting action of their scales protects them too.
所有穿山甲都能够把身体卷成球状来保护自己，锋利的鳞甲也是保护它们的工具。
But employers can successfully defend themselves if they can prove there is a strong business case for what they are doing.
但雇主若能证明该做法有很强的商业理由，就能为自己成功辩护。
Both men were too inebriated to defend themselves but managed to land blows on each other. Before long they were both gushing blood.
两人都醉得太厉害，只知把拳头打到对方身上，而不知防卫自己，不久他们身上便淌下血来。
They feel more and more oppression from the controlling forces, and of course the first natural response is to defend themselves.
他们感受到来自控制势力的越来越多的压迫，所以第一反应就是去保护自己。
"Though one may be overpowered, two can defend themselves. A cord of three strands is not quickly broken" (Ecclesiastes 4:12 NIV).
《传道书》4：12有人攻胜孤身一人，若有二人便能敌挡他；三股合成的绳子不容易折断。
If it is compromised, then the bees could not defend themselves against pesticides or fungal infections or bacteria or poor nutrition.
如果它被攻破，那么蜜蜂无法抵御杀虫剂或真菌感染，细菌或营养不良自己。
Executive administrative hearing is a relative to protect the right to defend themselves the most important and critical process systems.
行政听证是一项保障行政相对人申辩权利最重要、最关键的程序制度。
Every plant, Ames said, is full of 100 or more chemicals, including "natural pesticides," which the plants make to defend themselves against predators.
Ames说，每一种植物，都富含100种以上的化学物质，包括“天然农药”，这是植物为了保护自己免于被取食者侵害而产生的。
Most country spend a large money on weapons to defend themselves, even though they are not war, those countries should spend that to help poor man?
很多国家把大笔金钱花在武器上，虽然有些是为了自卫。有些人认为应花在救助贫困或其他，问你的意见？
They've been around 300 million years, so they've had plenty of time to learn how to defend themselves against disease-causing microbes in the environment.
它们已存在约3亿年，因此它们有足够的时间来学习如何保护自己免受环境中致病微生物的伤害。
They've been around 300 million years, so they've had plenty of time to learn how to defend themselves against disease-causing microbes in the environment.
它们已存在约3亿年，因此它们有足够的时间来学习如何保护自己免受环境中致病微生物的伤害。
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