人们认为人工合成这种元素是获得它的唯一途径。
People thought that synthesizing this element, making it artificially was the only way to get it.
为控制害虫，人们持续且不计后果地使用人工合成化学品，对农作物和人类健康造成危害，事实证明会产生相反的效果。
The continuous and reckless use of synthetic chemicals for the control of pests which pose a threat to agricultural crops and human health is proving to be counter-productive.
我们有理由相信，还会有更多的特质被人工合成出来，并转化成新的东西。
We have reason to believe yet more can be synthesized and made into something new.
这是肝磷脂的初期形态，一种重要的抗凝固剂，目前要获得该物质就不得不从血液中提取，而不是人工合成。
This is a precursor to heparin, an important anti-clotting agent that has, at present, to be extracted from blood, rather than being synthesised.
专家建议过敏症患者应该选择使用人工合成的而非羽绒枕芯，并给它套上抗敏感的枕套。
The experts suggested that allergy sufferers should opt for synthetic pillows over feather ones and fit them with anti-allergen covers.
传统的热狗使用的是一种叫硝酸钠的人工合成的添加剂，而天然或有机型的热狗则是用香芹粉或香芹汁来为产品防腐。
Conventional hot dogs use sodium nitrite, the synthetic version of the additive, while natural and organic versions use celery powder or celery juice to preserve their product.
更糟糕的是，你还会在在营养成分说明中发现一大堆添加剂和人工合成元素，甚至还有氢化油或人造奶油。
Plus, you’ll find plenty of additives, artificial ingredients and even hydrogenated oils, or trans fats, rounding out the list of ingredients.
现如今，红宝石也可在实验室被人工合成。
2002年，纽约的研究人员人工合成出脊髓灰质炎病毒。
In 2002, researchers in New York created a synthetic polio virus.
皮奇先生说，人工合成的发动机声音甚至有助于减少噪音污染。
Synthesised engine noises could even help reduce noise pollution, says Mr Peachey.
他的成果可能是人工合成生物技术第一次成功的大规模应用，用来破坏遍布于工业设备上的生物膜。
His accomplishment could produce synthetic biology's first big commercial success by attacking the biofilms that infest industrial equipment.
对比起提炼的和人工合成的糖类，木糖醇是一种低卡路里的代替品，它减少食物中差不多40%的能量。
Possessing approximately 40% less food energy (calories), Xylitol is a low-calorie alternative to refined and artificial sugars.
无糖口香糖里含有人工合成的制糖剂木糖醇或山梨糖醇，有助预防蛀牙。
It contains artificial sweeteners called xylitol or sorbitol that help prevents cavities.
MDMA已于百多年前首次人工合成，然闻者盖寡，及至上世纪六十年代，一年轻美国化学家始而食之。
MDMA was first synthesised almost a century ago but was little noticed until the 1960s when young American chemists began to ingest it.
几年前，当禽流感引起人们极大恐慌的时候，匹兹堡大学研究员研制出人工合成对抗h5n1型禽流感的DAN疫苗。
Several years ago, researchers at the University of Pittsburgh made an artificial DNA vaccine for the H5N1 bird flu virus that was greatly feared at the time.
DNA序列重排的成本在90年代中期是每个碱基对一美元，而现在的价钱是当时的十分之一，而且人工合成分子的成本也大大降低。
The cost of sequencing DNA has fallen from about $1 per base pair in the mid-1990s to a tenth of a cent today, and the cost of synthesising the molecule has also fallen.
为了论证这一新讲述，Bornhop博士和他的同事人工合成了含有GM 1这一小分子蛋白质的细胞膜。
To test their new technique Dr Bornhop and his colleagues made synthetic membranes containing a small protein called GM1.
这些人工合成的化学物质有甜味，但它们不含卡路里。
These synthetic chemicals taste sweet, but they have no calories.
为了人工合成它，ETF提供者通常达成一项被认为是与银行交换的累计回报的交易。
To synthesise it, the ETF provider usually enters into a transaction known as a total return swap with a bank.
他的小组建议至少较小的那尊佛像可以进行重建，用现存有的碎片再加上一种人工合成的材料阻止其风化。
His team suggests that at least the smaller Buddha might be partially rebuilt with existing fragments injected with a synthetic material designed to halt weathering.
这样，人工合成的汗液就可早日用于蚊虫研究，帮人类解开被蚊虫叮咬的秘密。
Then synthetic human sweat could be used in mosquito studies, sparing human subjects from the misery of being bitten.
如果这种食物在一千年前不存在或是人工合成的，那么很有可能你并不需要他们。
If it wasn't around a thousand years ago or is made by man (and not nature), chances are you don't need it.
1897年，这种植物中的有效成分的人工合成衍生物诞生了，于是阿司匹林变成了世界上应用最广泛的药品。
By 1897 a synthetic derivative (acetyl salicylic acid) of the plant's active ingredient (salicin) was created. This allowed aspirin to become the most widely used medicine in the world.
显而易见，那就去选无糖口香糖，并挑一个您可以容忍的味道（尽管它是人工合成品）。
Obviously, go for the sugar free gum and pick a flavor (despite it being artificial) that you can tolerate. Toss in a couple sticks of gum and chew away.
不要去找人工合成信息素香水了，除非你钱多得没处花。
Don't reach for synthetic pheromone spray, though, unless you have money to burn.
但到了十九世纪末，那种盛况随着一种全新材料的兴起而衰落，这就是赛璐珞，第一种人工合成的塑料。
But in the late nineteenth century, that panoply of possibilities began to fall away with the arrival of a totally new kind of material - celluloid, the first man-made plastic.
他们鉴定出四种不同的含铅物质，其中两种是人工合成的，并非天然物质。
They identified four different lead-based substances, two of which were man-made, not natural.
他们鉴定出四种不同的含铅物质，其中两种是人工合成的，并非天然物质。
They identified four different lead-based substances, two of which were man-made, not natural.
应用推荐