The NAFTA debate also exposed the often unnoticed fact that the environmental community is not monolithic.是什么意思？

The NAFTA debate also exposed the often unnoticed fact that the environmental community is not monolithic.

NAFTA之辩论暴露了经常未被注意的事实,即环境共同体不是整体的.

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。

NAFTA

北美自由贸易协定；

例句
He attacked the North American Free Trade Agreement ( Nafta ) and said It'should be renegotiated.
他大力抨击《北美自由贸易协定》 ( Nafta ),认为必须就该协定重开谈判.

debate

n. 讨论，辩论，争论，辩论；vt.& vi. 辩论，仔细考虑，思考，盘算；

例句
A full-scale debate is under way on what ails the industry.
关于工业为何陷入困境正在展开一场全面的讨论。

also

adv. 也，同样，并且；conj. 另外；

例句
The media have also abetted the feeling of unreality.
媒体也在一旁对这种非现实感推波助澜。

exposed

adj. 裸露的，暴露的；v. 揭露，暴露；

例句
The biggest fear among parents thinking of using the Internet is that their children will be exposed to pornography...
大多数父母认为使用因特网最可怕的是他们的孩子将接触到色情内容。

often

adv. 常常，经常，时常，再三；

例句
Genetic abnormalities are more often associated with faults in paternal DNA than in maternal DNA.
相对于母本DNA,基因畸变往往更多地与父本DNA上的缺陷相关。

unnoticed

adj. 未被觉察到的，未被注意到的，不受人注意的，被忽视的，没人理睬的；

例句
The cocktails were so sweet that the strength of them might pass unnoticed until it was too late.
这些鸡尾酒太好喝了，等你感受到酒劲时可能为时已晚。

fact

n. 事实，实情，实际，真相，证据，犯罪行为；

例句
The whole air of menace was accentuated by the fact that he was so cordial and soft-voiced.
他如此亲切，说话轻声细语，这更加重了威胁的语气。

that

det. 那个，那；pron. 那个，那；conj. 多么，如此…以至，用于某些动词、形容词和名词后，引出各种从句；adv. 不那么，那样；

例句
...expensive make-up that we saw being advertised by a beautiful model...
我们所见的由一位漂亮模特代言的昂贵化妆品

environmental

adj. （个人）环境的，由个人环境产生的，周围的，环境艺术的；

例句
He has attempted to align the Socialists with the environmental movement.
他已试图争取社会党人支持环境运动。

community

n. 社区，社会团体，共同体，[生态] 群落；

例句
Your community officer can give you advice on how to prevent crime in your area...
社区工作人员能就如何预防社区内犯罪提供一些忠告。

is

vt.& vi. 是（be的三单形式；n. 存在；

例句
Bollinger 'RD' is a rare, highly prized wine.
博林格RD香槟是一种名贵的备受推崇的葡萄酒。

not

adv. 不，[用以表示否定、否认、拒绝、禁止等]不是，几乎不，未必，没有[用于否定后面的词或短语]；

例句
It became very clear that the incident was not just an aberration, it was not just a single incident.
事实已经很清楚，这件事不是偶发的，它并不是一起孤立的事件。

monolithic

adj. 独块巨石的，整体的，庞大的；

例句
...an authoritarian and monolithic system.
庞大僵化的独裁体制