不必

If we interpret the symptoms of shortness of breath and air hunger in patients with acute lung injury and ARDS as the presenting symptoms of the hungry devils, we may be able to realize why the prone position was termed "Peta recumbency" in Buddhism, and why the old and sick people may not necessarily adopt the right lateral decubitus position during recumbency.

若我们把急性肺损伤及急性呼吸衰竭症候群病人的呼吸困难及其对氧气的饥渴解释成「饿鬼」所表现的症状，则似可理解为何佛教会将俯卧称做「饿鬼卧」，也可理解为何有老病时不必非采用右侧卧不可。

In other word I do not have to send it by air mail,right?

换句话说我不必把它航空邮寄了，对吗？

E.g.In other words I don't have to send it by air mail, right?

换句话说我不必把它航空邮寄了，对吗？

I don't worry about it at all. He can mail it by air or by sea.

我不着急。他不必用航空寄来，海运过来就可以。

As one of the common facilities in manufacturing enterprises, air compressors are widely used due to their capacity of producing compressed air. However , an authoritative survey shows that air compressor system consumes about 86%of the total energy cost within five years compared with purchase price that only accounts for 8% of total cost. This high volume of energy consummation invisibly increases enterprises' operational cost. However ,within the 90% of the cost for energy, main tenance and repair , 50% can be saved.

压缩机作为制造厂最常用的设备之一，其所产生的廉价适用的压缩空气能源备受许多企业家青睐，据权威机构调查，空气压缩系统在五年的总成本中，运转能源消耗费用占约86％，压缩系统初期购置费用仅占总成本的约8％，其高额的运转能源费用无形中增加了企业运营成本；然而人们却不知道这里占近90％的能源及保养修理费用却是有50％以上是可能不必支付的。

I am not in a hurry.He can send for it by sea instead of air transportation.

我不着急。他不必用航空寄来，海运过来就可以。

Air as well as sunlight, needless to say , is indispensable to our daily life.

空气正如阳光一样，不必说，它是我们日常生活中必不可少的。

Air as well as sunlight be,needless to say,indispensable to our daily life .

不必说，空气象阳光一样，对我们的日常生活不可缺少。

You don't have to tell him anything. Just tell him what an airhead he is.

你什么都不必说，只要让他知道他是笨蛋就行了。

As a cardboard box packed in containers have been widely used in international trade, which calls for airworthiness, you do not have to worry about.

纸板箱作为一种包装容器已在国际贸易中广泛使用，因此对他们的适航性，你们不必担心。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失