4/9翻譯作業

A third problem is that many environmental phenomena involve a huge number of interacting variables and complex interactions, which makes it too costly to test one variable at a time in controlled experiments such as the described in the core case study that opens this chapter.

第三個問題是，許多環境現象涉及互動的可變因素和複雜相互作用的一個巨大數目，它昂貴到不能每次在控制實驗測試一可變因素，如中所描述研究的核心，它開創了這個章節


Using multivariable analysis by developing mathematical models that include the interactions of many variables and running them on computers can sometimes overcome this limitation and save both time and money.

藉由開發的數學模型來使用多變量分析，包括在計算機互動的許多變數和運行，有時能克服這個局限，也省時間和金錢。


In addition, computer models can be used to simulate global experiments on phenomena like climate change, which are impossible to do in a controlled physical experiment

另外，計算機模型可以用於模擬像全球氣候變化的實驗現象，這是不可能在受控制的物理實驗達成。