必要时

Most payments to doctors and hospitals are made on a "fee-for-service" basis—which means that, unconstrained either by medical necessity or value for money, the industry's revenues rise with every test it does, procedure it carries out and prescription it writes.

大部分支付给医生和医院的报酬都是通过医疗费方式支付的，这意味着医生在看病时根本不用顾忌医学必要或医药费的问题。因此，进行的每项检查，做的每个手术，开的每个处方都会增加医院的税收。

Now, can we bring about, from the tenderest age, a sense of complete security, a feeling of being at home, so that in you there is no struggle to be this and not to be that?

我们是否能在幼年时就得到一份完整的安全感，一种仿佛在家的感觉，因而在你的内心中完全没有必要变成这样或那样的挣扎。

In a government which is founded by the people, who possess exclusively the sovereignty, it seems proper that the person who may be placed by their suffrages in this high trust should declare on commencing its duties the principles on which he intends to conduct the Administration.

在一种由人民建立并拥有绝对主权的政体中，人民投票选举出来担任这一职位的人，在任职初始之际似有必要公布他在执政时所要遵循的各项原则。

The red-room was a spare chabmer very seldom slept in: I might say never, indeed, unless when a chance influx of visitors at Gateshead-hall rendered it necessary to turn to account all the accommodation it contained: yet it was one of the largest and stateliest chambers in the mansion.

红房子是间空余的卧房，难得有人在里面过夜。其实也许可以说，从来没有。除非盖茨黑德府上偶而拥进一大群客人时，才有必要动用全部房间。但府里的卧室，数它最宽敞、最堂皇了。

The red-room was a square chamber, very seldom slept in, I might say never, indeed, unless when a chance influx of visitors at Gateshead Hall rendered it necessary to turn to account all the accommodation it contained: yet it was one of the largest and stateliest chambers in the mansion.

其实也许可以说，从来没有。除非盖茨黑德府上偶而拥进一大群客人时，才有必要动用全部房间。但府里的卧室，数它最宽敞、最堂皇了。—张红木床赫然立于房间正中，粗大的床柱上，罩着深红色锦缎帐幔，活像一个帐篷。

Resistance is about 5 times the resonance resistance.(3)The Rd in the circuit diagram is indispensable when used in a C-MOS oscillation circuit.

3当使用C-MOS振荡器时(见图7)线路图中的Rd是必要的。

She is expected to have had experience in the tailoring samples, and the pattern maker and the designer rely on her initiative to keep them informed or any problem foreseen or any adjustments that might be necessary in the early stages of development.

因此，人们要求她具有缝纫样衣的经验。样板师和设计师都依靠她的决断能力，使他们在服装研制的初级阶段能预见到穿着时可能产生的任何问题或做必要的调整。

The nervousness a typist feels, particularly near the end of a page when an error will require retyping the entire pages, is eliminated in word processing since corrections can be made one letter, one word, on line, or one paragraph at a time after the page is typed, the word processor making al the necessary format adjustments for corrections automatically.

一位打字员会感到紧张，特别是快打完一页的时候，这时一个错误可能导致整页要重打一遍，这种紧张在字处理器中会消除，因为在页面上打字时，每输入一个字母，一个单词，一行，一个段落都会得到校正，字处理器会自动做必要的格式校正。

The nervousness a typistfeels, particularly near the end of a page when an error will require retyping the entire pages, is eliminated in word processing since corrections can be made one letter, one word, on line, or one paragraph at a time after the page is typed, the word processor making al the necessary format adjustmentsfor corrections automatically.

一位打字员会感到紧张，特别是快打完一页的时候，这时一个错误可能导致整页要重打一遍，这种紧张在字处理器中会消除，因为在页面上打字时，每输入一个字母，一个单词，一行，一个段落都会得到校正，字处理器会自动做必要的格式校正。

It is essential that all responders understand that in the real world that time loss costs lives and property.

每个反应单位对於真实世界中时间耗损将造成生命与财产的损失的理解时非常有必要的。

They weren't aggressive, but I yelled and threw a rock in their direction to get them off the trail and away from me, just in case.

他们没有侵略性，但我大喊，并在他们的方向扔石头让他们过的线索，远离我，以防万一。

In slot 2 in your bag put wrapping paper, quantity does not matter in this case.

在你的书包里槽2把包装纸、数量无关紧要。