必须

Clearly, a refrigerator, which is a physical system must obey not only the first law but the second law of thermodynamics as well.

很明显，冷冻机是一种物理系统，因此它不仅必须遵从第一定律，也必须遵从热力学的第二定律。

The various meanings of "fittingness" in this text must be gathered from its successive contexts, just as one would understand the senses of Fug if one were reading the German text.

fittingness在文本各处的确切含义必须根据其上下文来推断，就像读德文本时必须根据上下文来理解Fug的含义一样。

The variousmeanings of "fittingness" in this text must be gathered from itssuccessive contexts, just as one would understand the senses of Fugif one were reading the German text.

fittingness在文本各处的确切含义必须根据其上下文来推断，就像读德文本时必须根据上下文来理解Fug的含义一样。

Embody in mainly: The resource touring is the basis that tour estate develops , making use of to the resource touring must consider future need , realize persistence developing , can not limit in the tour need satisfying the modern or the part people but first, on the resource making use of,; Secondary industry, develops a form going ahead , development of tour estate forms a regiment from initial simplicity ,"casting only a passing glance at" developing to tradition is dyadic tour , now already begin to transform spending self holidays to lying fallow and tour to experience that union , successive steps are hoisted each other; The plan and exploitation touring on the plan touring, are owing to being geared to the needs of future one job now thirdly,if is necessary to have long-term sight and acute insight , then it is possible, exceed the time restricting , estate fix position with the tour in future in the plan; The tourist enjoys fourthly, on need, from elementary sense organ , is advanced step by step even with oneself accomplishment touring as lifting and the way realizing the value of life having arrived at vigorous enjoyment.

主要体现在：第一，资源的利用上，旅游资源是旅游产业发展的基础，对旅游资源的利用必须考虑未来的需求，实现持续性发展，而不能局限在满足当代人或者部分人的旅游需求；第二，产业发展形态上，旅游产业的发展从最初的简单组团，发展到传统的"走马观花"式游览，现在已经开始转型到休闲度假与旅游体验相结合，逐步得到提升；第三，旅游规划上，旅游的规划和开发是基于现在、面向未来的一项工作，在规划中必须有长远的目光和敏锐的洞察力，才能超出时间的限制，将旅游产业定位于未来；第四，旅游者需求上，从初级的感官享受，逐步提升到了精神的享受，甚至将旅游作为提升自我素养和实现人生价值的方式。

In any case, if we are going to produce soft sounds, our joints and muscles must be resilient, and they must contract and fixate gently.

无论怎样，如果我们想要弹奏出柔美的声音，我们的关节、肌肉必须有弹性，而且必须能平和地收缩与固定。

Two red stoplights. They must be seen from 300 feet in the daytime, and must come on when the foot brake is pressed.

两个红色停车灯：必须保持在白天300英尺内可见，必须在踩下刹车时亮起。

Rural modernization construction must be guided by rational thinking and integrating the wisdom of different stakeholders, and conduct foresighted policy system designing.

农村现代化建设，必须有理性思维和平衡各方面利益关系的智慧，必须进行富有远见的政策体系设计

If he has acted to the contrary in the past, or shall in the future, or if he has in the past, is now or shall in the future fulminate any processes or mandates or ecclesiastical censures or any other penalties, against the said officials or any other adherents of this sacred council, to the effect that they should follow him, then all is null and void and in no way are the said processes, censures and penalties to be obeyed, inasmuch as they are null and void.

如果他的举动是相反的，在过去，还是在将来，或者，如果他有，在过去，现在，还是在未来的暴发性任何进程或任务或教会责难或任何其他处罚，对有关官员表示，或任何其他的信徒们把这一神圣的理事会，其大意是，他们必须遵照他的话，是无效的并且绝不是说进程，谴责和处罚必须遵守，因为它们是无效的。

If felt is used under the tile,its cost must also be include in the estimate of the job,and furring strips must be installed for certain applications.

如果毛毡使用在瓦片之下，它的费用在工作的估计必须也是包括，并且必须为某些应用安装furring的小条。

We've got to take that, we've got to make that into a fusion reactor. Because we want 30 million years worth of fusion power for the Earth. This is the device we're building now.

我们必须做这些，我们必须使它成为一个核融合反应炉，因为我们希望为地球获得相当於三千万年的核融合能，这是我们正在建造的装置（ITER：国际热核实验反应炉）。

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％。