这个句子结构怎么划分?Orica has spent more than $2 bllion in the past two years adding mining-service companies as soaring demand for commodities boosts demand for explosives and underground beams 在这个句子中这里的underground beams

这个句子结构怎么划分?Orica has spent more than $2 bllion in the past two years adding mining-service companies as soaring demand for commodities boosts demand for explosives and underground beams 在这个句子中这里的underground beams
这个句子结构怎么划分?
Orica has spent more than $2 bllion in the past two years adding mining-service companies as soaring demand for commodities boosts demand for explosives and underground beams
在这个句子中这里的underground beams
是什么意思
还有Orica has spent more than $2 bllion in the past two years 这个是主句,而
mining-service companies as soaring demand for commodities 这里的as怎么理解,当什么词用
怎么感觉后面有好几个谓语动词似的

这个句子结构怎么划分?Orica has spent more than $2 bllion in the past two years adding mining-service companies as soaring demand for commodities boosts demand for explosives and underground beams 在这个句子中这里的underground beams
首先,这句话的主干是：Orica has spent more than $2 billion.
spent sth.(in) doing sth 是在某方面花费某物（时间,金钱）的意思,in可以省略,比如这句话就是spent 2 billion (in) adding mining-service companies.意思是花费了20多万美金来增加采矿服务公司.
as在这里是当...的时候的意思,是引导一个原因状语.当然在这个大的状语里面也是有主谓宾的,所以你会觉得有好几个谓语.其实在这个状语中,主语是soaring demand for commodities,更确切一点是demand,谓语是boost,表示增加,宾语是demand for explosives and underground beams,更确切是demand.在这里underground beams是一个采矿业的术语,应该是地下钢梁的意思.
那么,综上所述,整句话的意思是,目前,对于炸药（explosives）和地下钢梁(underground beams)的矿产品需求激增,在过去的两年中Orica已经花费了20多万美金来增加采矿服务公司的数量.

as soaring demand for commodities boosts demand for explosives and underground beams 是 Orica has spent more than $2 bllion in the past two years adding mining-service companies 的原因。
as后面部分解释as前面部分...

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as soaring demand for commodities boosts demand for explosives and underground beams 是 Orica has spent more than $2 bllion in the past two years adding mining-service companies 的原因。
as后面部分解释as前面部分，也有随后部分发生了前部分事件的意思。
underground beams是种建筑结构把，地下钢条之类

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Orica has spent more than $2 bllion in the past two years adding mining-service companies [as （=when)(soaring demand for commodities这是从句的主语） boosts（谓语） （demand for explosives and underground beams ）从...

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Orica has spent more than $2 bllion in the past two years adding mining-service companies [as （=when)(soaring demand for commodities这是从句的主语） boosts（谓语） （demand for explosives and underground beams ）从句宾语]
由于对商品急速增长的需求推进了对炸药和地下光线的需求，在过去两年Orica已经花费了20亿多来增加采矿服务公司。

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as 引导原因状语从句，从句里当然可以有一个它的谓语。
从句的谓语是boosts.主语:soaring demand for commodities
宾语demand for explosives and underground beams
underground beams 应该是地下梁

有点杂