In modern era, it’s unlikely for a nation to produce everything (it needs) and consume everything (it makes). To alleviate the dilemma of surplus and shortage, goods are exchanged between nations. … A country might prohibit importing or exporting certain products, or it might set quotas controlling the number of certain products to be imported or exported, or it might charge duty tax on certain products. …
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　　在现代，一个国家不太可能生产出自身所需要的一切，也不太可能消费掉自己能够生产出的一切。为了缓解剩余与短缺之间的这种两难局面，国与国之间都在进行货物交换。……一个国家可能禁止进口或出口某些特定的产品，也可能制定配额用以控制某些进出口产品的数量，同时还可能就某些产品征收进口关税。……
　　1、be likely/ unlikely to do sth.；be likely/ unlikely that（不）可能的，如：He is not likely to succeed.他大概不会成功。It’s highly likely that he will succeed.他成功的可能性很大。
　　2、alleviate v.减轻，如：The UN’s most important objective is to alleviate world poverty.

　　There are many legal considerations associated with interactions between businesses. Even simple transactions such as a contract for the sale of goods/ can be complicated by differing legal system in the countries involved. The issues are even more complex when dealing with international capital investments, especially if they involve technology transfer and intellectual property issues. …
　　参考译文
　　与企业间贸易往来相关的法律问题有许多。即便是货物销售合同这类简单的交易也由于相关国家法律体系的不同而趋于复杂。在处理国际资本投资方面的问题时，特别是当这类投资涉及技术转让与知识产权时，情况会更复杂。……
　　1、 associate one thing with another将一事与另一事联系在一起，如：We associate Egypt with the pyramid.我们想起埃及就想起金字塔。
　　be associated with意为“联系”，如：His social problems were associated with heavy drinking.
　　2、  Complicate意为“使复杂”，如：Let’s not complicate matters by introducing any more restrictions.
　　3、  involve意为“包括，涉及，使陷入”，常用的短语为“be involved in”。