The advantage of biological control in contrast to other methods is that it provides a relatively low-cost, perpetual control system with a minimum of detrimental side-effects.
与其他方法相比，生物防治的优点是它提供了一种成本相对较低、有害副作用最小的永久性防治系统。
她是个终身学习者。
On another scale, he was a perpetual outsider.
另一方面，他永远是一个局外人。
As Lawrence James says about the British variety in "The Middle Class: A History", they are "a sprawling, untidy organism in a perpetual state of evolution".
正如劳伦斯·詹姆斯（Lawrence James）在他的《中产阶级：一段历史》(the Middle Class:A History)中对英国多样性的描述，他们是“一个不断进化的、杂乱无章的有机体。
It is about delivering a perpetual gift to every future generation of children to be born.
这是向今后将出生的每一代儿童赠送的一份永久的礼物。
Polio eradication will be a perpetual gift from us - and from all those in the field - to every future generation of children to be born.
根除脊髓灰质炎将是我们以及该领域内所有人对未来将出生的每一代儿童的一份永久性礼物。
And it can do so solely by means of a perpetual paradox which confers on colors the power to express the void and on daily gestures the strength to translate eternal ambitions.
它之所以可以做到这一点，是因为一个永恒的悖论，后者赋予了色彩表达虚无的能力，给予了日常行为转化不灭壮志的力量。
We are leaving a perpetual gift to generations of children to come.
我们会为未来世世代代的儿童留下一份永久的礼物。
When eradication is achieved, we will have delivered a perpetual gift: no child will ever again suffer life-long paralysis from polio.
当消灭了这一疾病之时，我们就会送出一份永久的礼物：不会再有孩子因脊灰而终身瘫痪。
There will, of course, be a perpetual dynamic tension in any boardroom between a cautious, wholly conservative outcome and a vision of wild success.
当然，在任何一个会议室，在谨慎、完全保守的结果与疯狂成功的愿景之间，都会存在一种永恒的动态张力。
In 1774, in the most important copyright case in Anglo-American legal history, the British House of Lords sided with Donaldson and rejected the idea of a perpetual copyright.
1774年，英美法系历史上最重要的版权案例中，英国贵族院附议了唐纳森的主张，驳回了永久版权的主意。
Indeed, on the atomic scale, perpetual motion is a reality.
的确，从原子尺度看，永恒的运动是一个确实存在的事实。
It shall be a perpetual statute for your generations throughout all your dwellings, that ye eat neither fat nor blood.
在你们一切的住处，脂油和血都不可吃，这要成为你们世世代代永远的定例。
Perpetual waiting is a serious illness. And I think it's time to detox.
永久的等待是一个严重的错误，我认为是时间戒掉心瘾了。
Making energy like the sun does might too cheap to meter or as uneconomical as a perpetual motion machine.
像太阳一样产生能量可能会太便宜以至于无法计费，或是像永动机一样太不合算。
After decades of decline, the city looked like a set for an apocalyptic movie, especially in the crush of winter, when the sky was a perpetual charcoal gray.
数十年的衰败后，这个城市看起来像灾难电影的场景，特别是在冬天的压迫下，当天空一直呈现炭灰色的时候。
You see, this is almost a perpetual circle of improvement.
你也看到了，这是一个循序渐进的提高。
When an airline is engaged in a perpetual battle for the world's richest people, it has to pull out all the stops.
假如一家航空公司总是在和这个世界上最有钱的人在打交道，它就要使出浑身解数。
For a start, if you rely on novelty to keep life interesting, you risk ending up on a perpetual treadmill, always seeking the next thrill.
首先，如果依赖新奇感来保持生活的趣味，最终可能踩上一部永不停止的跑步机，永远在追寻下一个刺激。
This is the point that de Man is making in Semiology and Rhetoric that there is a perpetual tension in any utterance between grammar and rhetoric.
德曼在其《符号学与修辞学》中提到,在任何说出的话中语法和修辞间,存在着永恒的对立。
This is a perpetual problem faced by all IT organizations.
这是所有的IT公司面临的长久的一个问题。
In their heat I will make their feasts, and I will make them drunken, that they may rejoice, and sleep a perpetual sleep, and not wake, saith the LORD.
他们火热的时候，我必为他们设摆酒席，使他们沉醉，好叫他们快乐，睡了长觉，永不醒起。这是耶和华说的。
It keeps us in a state of perpetual mental locomotion.
它让我们的精神处于永远的奔波之中。
She was in a perpetual state of heightened arousal, hence the pacing, moaning, and inability to sleep.
她始终处于一种高度警醒的状态，因此她一直在踱步，悲泣，而无法入睡。
Management by perpetual crisis is perhaps a reflection of the company's national roots.
三星不断的危局管理也许是韩国国家命运的缩影吧。
Management by perpetual crisis is perhaps a reflection of the company’s national roots.
三星不断的危局管理也许是韩国国家命运的缩影吧。
There may be no full-scale humanitarian emergencies any more, but people are left in a perpetual state of chronic hunger.
可能不再需要全方面的人道救助，但等待这些灾民的可能是长期的无止尽的食不果腹。
But studying there was ultimately a fulfilling and unforgettable experience that broadened his interests and taught him to remain a perpetual student.
但是在英国的求学经历是充实和难忘的，因为在那段时间拓展了他的兴趣，并使他学会要终身学习。
Together Senator Obama and I achieved milestones essential to our progress as a nation, part of our perpetual duty to form a more perfect union.
我和参议员奥巴马携手并肩，走出了历史性的一步，到达了这个国家的转折点。我们终生都以建立一个更加完美的联盟为己任。
Together Senator Obama and I achieved milestones essential to our progress as a nation, part of our perpetual duty to form a more perfect union.
我和参议员奥巴马携手并肩，走出了历史性的一步，到达了这个国家的转折点。我们终生都以建立一个更加完美的联盟为己任。
应用推荐