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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
to wriggle out of your responsibilities
找借口逃避责任
...the only woman among the authors making it through to the last six.
进入最后6人名单的唯一一位女作家
The group leader supervises a dozen workers.
组长管十二个工人.
Alistair saw the dim figure of Rose in the chair...
阿利斯泰尔看见了坐在椅子里的罗丝的模糊身影。
Serving and tasting A crowd of travelling Ecuadorian fans formed the judging panel.
一群远道而来的厄瓜多尔球迷临时充当了这次厨师比赛的裁判.
Some guests recline in lounge chairs on the sea-facing terrace.
在面向大海的平台上一些客人斜躺在躺椅上。
He felt himself so powerfully attracted to the scientific ideal.
他感到自己被这一科学理想十分强烈地吸引住了.
He knows the wheels of administration turn slowly.
他知道行政机关办事效率低。
The day dawned sunless and with a low cloud base.
黎明时分天气阴沉，云幕低垂。
Such inequalities are found in every stratum.
这类不公平的现象存在于社会的每一个阶层。