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1. Zoological parks in many cities export birds from many lands and are a source of recreation for millions of people each year.(1)____
译文：很多城市的动物园从很多地区引进鸟类，动物园每年都是数百万人的消遣去处。
2. An expert, together with some assistants, have been sent to help us with the project.(2)____
译文：一个专家和他一些助手已被派来协助我们的工程。
3. In the eighteenth century farmers were quite self-sufficient. The farm family grew and made almost nothing it needed.(3)____
译文：18世纪农民自给自足。农家几乎种植或制造所需的全部物品。
4. Salt Lake City, Utah's capital and largest city, is industrial and banking center.(4)____
译文：犹他州的首府以及最大的城市——盐湖城是一个工业和银行业中心。
