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The drug companies Pfizer, Sanofi - Aventis and Nektar Therapeutics developed it.是什么意思？

The drug companies Pfizer, Sanofi - Aventis and Nektar Therapeutics developed it.

是由辉瑞公司, 赛诺菲-安万特公司及内克塔治疗公司联合发明的.

相关词汇
the drug companies and therapeutics developed it

the

art. 指已提到的人（物），指说话人与听者已知的人（物），用于独一无二的事物前，与形容词最高级和序数词连用；
例句
He did have a real knowledge of the country...
他对该国的确知之甚多。

drug

n. 药物，药剂，麻醉药，毒品；vt. （在食物或饮料中）投放麻醉药，下麻醉药，掺麻醉药于，使服麻醉药，使服毒品；vi. 使服麻醉药，用药麻醉，使服兴奋剂；
例句
Naylor acknowledged, in a letter to the judge, that he was a drug addict...
内勒在给法官的信中承认自己吸毒。

companies

n. 公司( company的名词复数 )，[军事]连，连队，客人；
例句
The workforce have recently been calling for their working hours to be reduced. Many companies have accordingly switched to a five-day week.
工人们最近一直在呼吁缩短工作时间。许多公司于是转成了一周五天工作制。

and

conj. 和，与，而且，于是，然后，因此；
例句
I spend a lot on expensive jewelry and clothing...
我花很多钱购买昂贵的首饰和衣服。

therapeutics

n. 治疗学，疗法；
例句
The drug companies Pfizer, Sanofi - Aventis and Nektar Therapeutics developed it.
是由辉瑞公司, 赛诺菲-安万特公司及内克塔治疗公司联合发明的.

developed

adj. 先进的，发达的（国家或地区）；
例句
He had developed a slight American accent.
他说话带上了一点轻微的美国口音。

it

pron. 它，他，正好是所需的，事实[情况]；n. <美俚>傻瓜，笨蛋，<俚>绝妙的人，理想的东西，登峰造极；
例句
I suggest you leave it to an expert...
我建议你把它留给专家来解决。
热门例句
He acknowledged publicly that he might have made a mistake.
他当众承认自己可能犯了个错误。
...the spiralling vortex airflow that slows the plane.
使飞机减速的螺旋形气流涡旋
You just go on ahead. I'll come by later...
你只管先往前走。我随后就来。
He who spares his rod hates his son, But he who loves him chastens him early.
24不忍用杖打儿子的,是恨恶他;疼爱儿子的, 趁早管教.
For further information, please contact 414 3925, extension 2253.
详情请致电414 3925,转分机2253。
He sat there while I made the case for his dismissal...
他坐在那儿，听我陈述解雇他的理由。
Baroness Thatcher's claims seem credible to many.
撒切尔女男爵的主张在很多人看来是可信的。
Nothing to be got without pains but poverty.
一份耕耘，一份收获。
This decree obliges unions to delay strikes.
该法令迫使工会推迟罢工。
The right to demand payment from the endorser of a commercial paper when the first party liable fails to pay.
追索权当有支付义务的第一方不能支付时，可以向商业票据的背书人要求支付的权力。
相关例句
He has always lived his life by a hopelessly quixotic code of honour.
他生活中一直遵循一种完全不切实际的堂吉诃德式的道德准则。
Franklin was free to do pretty much whatever he pleased...
富兰克林几乎可以做自己喜欢做的任何事情。
Her plait has been clipped last week.
她的辫子在上周被剪掉了。
...gym classes.
体育课
Meg was in a state of fevered anticipation.
梅格处于一种兴奋的期待中。
The court case was constantly in the forefront of my mind.
这宗诉讼案一直压在我心头。
I am a frequent hand washer and this lotion replenishes the moisture balance quickly and pleasantly.
我是个经常洗手的人,这款乳液很快的补充保湿平衡,而且还很舒适.
...all those Sundays spent washing and waxing the car.
那些用来洗车和给车上蜡的星期天
He had just had a meal and was picking his teeth after it.
他刚吃完饭，正在剔牙。
Some English adverbs function as adjectives.
有些英语形容词起副词作用.