Since Iraq, Mr Bush has tried to build coalitions against proliferation.是什么意思？

Since Iraq, Mr Bush has tried to build coalitions against proliferation.

在伊拉克之后, 布什就试图建立联盟来打击核扩散.

since

prep. 从…以来，自从…之后，自从；adv. 以后，此后，后来，（距今几年）以前，（从那时候起几年）以前；conj. 自从…以来，自从…的时候起，既然，因为；

例句
Janet had been abused by her father since she was eleven.
珍妮特从11岁起就遭受父亲虐待。

Iraq

n. 伊拉克共和国；

例句
Traffic from Jordan to Iraq is down to a dozen loaded lorries a day, compared with a high of 200 a day...
现在从约旦到伊拉克一天只有十几辆装货的卡车通过，而最高峰时可达到一天200辆。

Mr

abbr. Mister 先生，Master 少爷，Mother 母亲，molecular radius 分子半径；

例句
According to police accounts, Mr and Mrs Hunt were found dead on the floor of their kitchen.
据警方称，亨特夫妇被发现死在家里厨房的地板上。

bush

n. 灌木（丛），[机械学]（金属）衬套，[电学]（绝缘）套管，类似灌木的东西（尤指浓密的毛发或皮毛）；vi. 丛生，灌木般丛生，浓密（或茂密）地生长，生密枝；vt. 加（金属）衬套于，加套管于，用耙耙平（耕地），以灌木（或灌木丛）装饰（或覆盖、围绕、围住、支撑、标志、保护等）；adj. （豆科植物等）如灌木般长得低矮的，粗野的，粗鲁的，粗糙但实用的；

例句
They walked through the dense Mozambican bush for thirty six hours...
他们花了36个小时穿过茂密的莫桑比克丛林。

has

v. 有( have的第三人称单数 )，（亲属关系中）接受，拿，买到；

例句
...the operation a patient has had.
病人做过的手术

tried

adj. 可靠地，经过考验的；v. 试图，努力( try的过去式和过去分词)，考验，磨炼，审讯；

例句
He was tried in absentia and sentenced to seven years in prison.
他被缺席判处七年监禁。

to

prep. 向，朝着，到，关于，属于；adv. 朝一个方向的，到某种状态，关闭；

例句
I suggest you leave it to an expert...
我建议你把它留给专家来解决。

build

vt. 建造，构筑，建立，开发，为…建立基础；vi. 建造，营造，扩大，扩展，发展，达到；n. 体格，构造，〈俚〉优美的体型，肉体美；

例句
Marine construction technology like this is very complex, somewhat analogous to trying to build a bridge under water.
像这样的海底建造技术很复杂，与尝试在水下建桥有些相似。

coalitions

n. 结合体，同盟( coalition的名词复数 )，（两党或多党）联合政府；

例句
Since Iraq, Mr Bush has tried to build coalitions against proliferation.
在伊拉克之后, 布什就试图建立联盟来打击核扩散.

against

prep. 反对，对…不利，紧靠，以防；

例句
His hand brushed against hers; it could have been either accidental or deliberate.
就在有意无意间，他的手轻轻拂过她的手。

proliferation

n. 增殖，分芽繁殖，再育，增生；

例句
The positive rate of surrounding mammary adenosis lobular proliferation stage was 33.9 %.
癌旁腺病小叶增生期阳性率为33.9%.