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。
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。
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。
Article 32 the parties shall have the right to state their cases and to defend themselves.
第三十二条当事人有权进行陈述和申辩。
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。
It's hard to win these types of games, against sides who come to San Siro to defend themselves.
那些球队来到圣西罗就是为了防守，和这样的队伍交手很难取胜。
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。
Countries should be able to defend themselves, he suggested, if an attack posed imminent danger to human lives.
切尔托夫指出，如果出现一场使人类生命危在旦夕的袭击，各国应该有能力保护自己国家的人民。
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。
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。
We must expect these teams which come to San Siro and defend themselves, not allowing Milan to find Spaces to go forward.
这些来到圣西罗的客队抱着死守的态度，不让米兰找到更多进攻的空间。
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。
"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。
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。
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 always defend themselves by saying that they are just doing their job, and it's nothing personal, and if they don't do it, someone else surely will.
他们总爱为自己辩护，说他们只是奉命行事，做好自己的工作，与个人没有关系，要是他们不这样做，也肯定会有别人做。
The attorney general said it would allow the evidence to be re-evaluated, and he promised that the doctors and nurses would have the full opportunity to defend themselves.
总检察长表示，将重新审核有关证据，他承诺说，医生和护士将有充分的机会为自己辩护。
The air defenses of France and England, their greatly superior naval strength, their manpower, their resources, their resolution, make it certain that they can defend themselves.
英国和法国牢固的空中防御，强大的海上力量，充裕的人力物力和不屈不挠的精神，确保了他们自卫的能力。
The need for stability and protection. From earliest times, communities have had to keep peace among their members, defend themselves against extra attack, and protect community assets.
稳定和保护的需要始自最久远的时期，人类团体不得不在其成员间保持和平，在外来进攻中进行自卫，并且保护团体的财产。
She said: "Money played no role for me personally and never has, except to the extent that I could donate it to charity and, in doing so, hopefully help those less able to defend themselves."
女方说：“钱对我个人来说没有任何意义，之前不会，以后也不会。不过有了钱，我就能把它捐给慈善机构，希望这么做能帮助那些无力保护自己的人。
She said: "Money played no role for me personally and never has, except to the extent that I could donate it to charity and, in doing so, hopefully help those less able to defend themselves."
女方说：“钱对我个人来说没有任何意义，之前不会，以后也不会。不过有了钱，我就能把它捐给慈善机构，希望这么做能帮助那些无力保护自己的人。
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