Baltimore in its heyday was a major centre of industrial and commercial activity.
巴尔的摩在其鼎盛时期曾是工商业活动的主要中心。
Most business and industrial activity in the United States is financed by loans from commercial Banks and from insurance companies.
美国大部分商业和工业活动是由商业银行和保险公司贷款资助的。
From economic point of view, judging whether a social activity has industrial characteristics depends on whether it has production process and its products possess commercial characteristics.
从经济学的角度来看，判断一项社会活动是否具有产业性，主要看它是否属于生产过程、其产品是否具有商品特征。
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