This principle is called " herd immunity" .

这一原则被称为“群体免疫”。

For the first time, environmental principles will be enshrined in law.

环境保护原则将首次写入法案。

I am conservative and I stick to my principles and keep to rules.

我是保守；我坚持原则，遵规守矩。

His speech began this way: “Four score and seven years ago, our fathers brought forth on this continent a new nation, conceived in liberty and dedicated to the proposition that all men are created equal.”

“八十七年前，我们先辈在这个大陆上创立了一个新国家，它孕育于自由之中，奉行一切生来平等原则。”

The principle of British welfare is no longer that you can insure yourself against the risk of unemployment and receive unconditional payments if the disaster happens.

如果不幸情况发生，英国福利原则不再是确保你自失业风险和无条件接受失业保险。

The Israeli leader Menachem Begin called him unprincipled, avaricious, heartless and lacking in human feeling after he said that Germans living in a divided nation should feel sympathy for Palestinian self-determination.

在发表了生活在一个分裂国家中德国应当对巴勒斯民族自决表示同情言论后，以色列领导贝京称没有原则立场、贪得无厌、没心没肺，而且缺乏类感情。

It's my principles. We're talking about my principles.

这是原则问题 重点是我原则。

To combat the trap of putting a premium on being busy, Cal Newport, author of Deep work: Rules for Focused Success in a Distracted world, recommends building a habit of " deep work" —the ability to focus without distraction.

为了不让大家陷入以忙碌为荣陷阱之中，《深度工作：在纷扰世界中成功保持专注原则》作者卡尔·纽波特建议大家培养“深度工作”习惯，即培养不受外界干扰、专注能力。

I think it's very important as an emperor, historically, is of the principle of pedigree.

我认为这是非常重要，作为一个皇帝，从历史上来说，是血统原则。

The second rule requires a neutral point of view.

第二原则是保持中立。

Markets have lost faith that the euro zone's economies, weaker or stronger, will one day converge thanks to the discipline of sharing a single currency, which denies uncompetitive members the quick fix of devaluation.

们曾相信，欧元区经济体，无论弱国或强国，只要本着使用统一货币原则，就能免了那些缺乏竞争力国家采取货币贬值这一权宜之计，就能有朝一日实现统一——如今市场已经丧失了这种信念。

The iPhone is infused with simplicity and beauty.

iPhone奉行简洁美观原则。

The principle for taking samples is for it not to linger.

采集样本原则是不要逗留太久。

Strictly construed, his car is his property, Mr. Gardner.

遵循严格解释原则 车属于财产。

But he was the first who ever did so by choice, out of principle.

但确实是第一个自愿这么做，这是出于自做原则而已。

Perseverance is the fundamental principle in learning English no matter what method you choose.

不管选用什么方法，坚持不懈都是英语学习基本原则。

It challenges that most basic of principles of our international system - that borders cannot be redrawn at the barrel of a gun, that nations have the right to determine their own future.

俄罗斯挑战了我们国际体系中最基本原则——国境线不能通过枪炮来重新划定，国家有权决定自未来。

To do otherwise would be against our core principles and our business interests.

否则将违背我们核心原则和我们商业利益。

Natural selection is the cornerstone principle of evolution.

物竞天择说是进化论基础原则。

That does change the fundamentals of how we work as a business.

这种方式确改变了我们作为企业运行基本原则。