类型片研究的成果之一是：一些人争论说“西部片”不一定要发生在美国西部甚或19世纪，因为从其它类型的影片里也能发现西部准则。
One of the results of genre studies is that some have argued that "Westerns" need not take place in the American West or even in the 19th Century, as the codes can be found in other types of movies.
在用药病人或临床研究对象中发生的任何不幸医疗事件，他不一定要与治疗有因果关系。
Any untoward medical occurrence in a patient or clinical investigation subject administered a pharmaceutical product and which does not necessarily have a causal relationship with this treatment.
最终的目的当然还是要销售给消费者一些东西，但是销售并不一定是直接的，也不一定要立刻发生。
The ultimate purpose is of course to sell something to the consumer, but the selling does not need to be direct and does not need to be instant.
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