必须

In old Roman law, another step was absolutely required; it was necessary for the promisee, after the agreement had been made, to sum up all its terms in a solemn interrogation; and it was of this interrogation, of course, and of the assent to it, that proof had to be given at the trial —— not of the promise, which was not in itself binding.

在古罗马法中，另一个步骤是绝对需要的，即允约人在达到合意后必须把所有条件综合在一个庄严的问句中；并且，在审判时，必须提出的证据，就是这个问句以及对这问句的同意——而不是允约，允约本身是没有拘束力的。

It is also essential to consider the question of outlook from the various rooms ,and those most in use should preferably face south as possible .it is ,however ,often very difficult to meet the optimum requirements ,both on account of the surroundings and the location of the roads .in resolving these complex problems ,it is also necessary to follow the local town-planning regulations which are concerned with public amenities ,density of population ,height of buildings ,proportion of green space to dwellings ,building lines ,the general appearance of new properties in relation to the neighbourhood ,and so on .

此外，还必须考虑各种客房的朝向问题，当然最好尽可能的将那些经常使用的房间朝南设置。然而，在考虑到周围的环境和地点、道路等多方面因素，往往很难达到最佳要求。在解决这些复杂的问题，还必须按照当地城市规划条例所涉及的对公共设施，人口密度，建筑物高度，绿化面积，建筑红线等的要求，还要考虑到有相邻建筑的情况，等等。

RESULTS Through inspecting the pyrexia patients, confirming the risk factors, establishing prevent and control schemes, promoting the hospital disinfection management to guarantee the nosocomial infection be controlled at the first t...

结果 通过对发热患者监测、危险因素确定、干预措施和控制方案制定等，确保了医院感染控制工作在应对 SARS事件第一时间内全面展开。结论 SARS的防治和监测必须坚持不懈，医院感染控制必须落实三级预防措施。

The Buyer must inform the Seller of its tonnage requirements for the forthcoming quarter at least one month ahead of the first day of that quarter.

买方必须通知卖方下一个季度对其吨位的要求，提出要求的时间必须比那个季节的第一天至少早一个月。

If you want to ask your senior people , you should ask "What is your name please " 2. When I teach "What is your age " I will tell them : there are "Three Don'ts" and "Three Things" in Britain ."Three Don'ts"(1) Don't ask a woman her age .(2) Don't became a queue jumper .

如果你想问你的长辈你必须说"What's your name please "当我教"What's your age "这个句型时，我告诉学生们在英国有三个不许做的事和三个必须做的事，三个不许是：1，不要问妇女的年龄：2，不要成为插队的人：3，不要讲价当在英国购物时。

Some conclusions are drawn:instrument of the digital measure of radon must be standardized and only standardized by flow through radon gas source;gas flux of entering the scintillation chamber should be controlled or measured in the process of digital measure of radon.

指出对测氡仪器必须进行标定，而且必须用流通式氡气源来标定；在观测中应控制或测定进入闪烁室的气体流量。

It has to be standardized and, for agricultural and industrial commodities, must be in a basic, raw, unprocessed state.

它必须是已经标准化农产品或工业产品，必须处于基本的、原始的、未加工的状态。

China must learn to strengthen the knowledge and of its own culture and the re-creation of it.

中国必须强化对自身文化的学习，必须强化自身文化的再创造。

It has to be a solution that does not allow the rearmament of Hamas, and it must be a solution that finds a way to open crossings so that Palestinians in Gaza can have normal life.

它必须不能让哈马斯重新武装。它必须找到一种开放边界的途径，以便让加沙的巴勒斯坦人能正常的生活。

If we rechange these two numbers: one number to two times as many as its original value, and the other to four times as many as its original value, the average of the five numbers will become 13. Which two numbers have been changed?I only know that the total sum of the original numbers is 45(5×9), the total sum of the 5 numbers after the first change is 40(5×8), and the total sum of the 5 numbers after the second change is 65(13×5). What can I do next? Please help me with the problem.Thank you!

这就要求琬婷一方面要用英语准确地把她想要问的问题清晰地表达出来，只有这样网上"数学博士"才能明白你要问的问题；另一方面琬婷还必须能够正确理解网上"数学博士"对她所提问题的英语答复，这两者是相互依赖的，否则就不能正确地帮助你理解和解决问题，这就要求琬婷必须用英语进行正确地表述和理解。

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％。