必须

As a result, the intervenor will be in a dilemma and so we must try to find out the best path to the incentive and the mode of the regulation on the basis of the human nature character of the economic man .

为走出这一困境，必须基于经济人的人性特点探寻对经济人的激励路径和约束方式，科学的国家干预立法必须遵循理性自利主义原则。

But, my good friend, reflect whether that which is noble and good is not something different from saving and being saved; for as to a man living such or such a time, at least one who is really a man, consider if this is not a thing to be dismissed from the thoughts: and there must be no love of life: but as to these matters a man must intrust them to the deity and believe what the women say, that no man can escape his destiny, the next inquiry being how he may best live the time that he has to live.

我的好朋友，且想想那高贵的和善的事情是不是某种与拯救和得救不同的事情；因为对一个生活这么长或那么长一段时间的人、至少是一个真正的人来说，考虑一下，是否这不是一件脱离这种思想的事情：那儿一定不存在对生命的任何爱恋，但关于这些事情，一个人必须把它们托付给神，并相信命运女神所说的，没有谁能逃脱自己的命运，接着要探究的是：他如何才能最好地度过他必须度过的这一段时间。

Abstractive Intuitiveness - either the modeler has to understand better definitions of rules, relationships and processes of components or has to be flexible enough to have these added on the fly.

抽象的直观性-无论是建模者必须了解规则，关系和过程的组成部分，或有更好的定义必须有足够的灵活性，这对飞说。

During the period of the world industrialization, all countries developed their economy by using natural resources inventively, which broke the ecological environment and formed high-cost economic development. Since the eighties of the 20th century, the global ecological crisis made people realize that social economic development must coordinate with natural ecological environment, and that environment changes have effect on the social economy.

在世界工业化的进程中各国基本上把经济增长建立在无限索取自然资源和对生态环境进行破坏的基础上，形成了高成本的经济发展。80年代以来，生态危机的全球征候引发了人类对自身发展危机的思考，认识到了社会经济发展必须与自然生态状况相协调，必须考虑到生态环境变化对社会经济的决定作用。

If we are to be aware of the whole process of authority, if we are to see the inwardness of it, if we are to understand and transcend the desire for certainty, then we must have extensive awareness and insight, we must be free, not at the end, but at the beginning.

如果要觉知权威的整个过程，弄清它的内在性质，了解和超越对确定的欲望，我们就必须具有广泛的觉知力和洞察力，我们必须是自由的，不是在最终，而是在最初就是自由的。

The change of temperature and ionization fraction affects each other, must be considered together.

必须指出，电离度和温度的变化是相互影响的，必须综合考虑。

Tools must be used to remove iron filings, and prohibit using hands to wipe or mouth to blow clean.

清除铁屑，必须使用工具，禁止手拉嘴吹。清除铁屑，必须使用工具，禁止手拉嘴吹。

Some scholars like Isao Kurosaki thought that public school choice would benefit for parents'and students'rights to education, and should raise public schools'quality, improve students'various identities, and finally extend educational opportunity.

但是可以明确的是学校选择制度的实施必须以多样化教育、多样化学校的创建为必要前提，并且必须有保证弱势群体的平等机会的补偿性政策措施。

For most of the post-war period an important element of Austrian politics has been the Proporz, a form of "jobs for the boys" in which posts and contracts in the public sector and state-owned industry were divvied up among supporters of the two big parties.

那意味着他们必须亲密合作，但同时也必须对各自保持警惕。

Installation procedures must comply with all state and local codes and must be completed by a licensed journeyman tradesperson who is recognized by the authority having jurisdiction.

安装程序必须符合州和当地所有的规程，必须由有关部门认证的有资格证书的数量熟练人员操作。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。