托福写作：写作时必备抽象词（24）
Temporary用法：①Something that is temporary lasts for only a limited time.
例句：Furthermore, the broadside format lent itself to subjects of high, if temporary, interest, enabling them to meet with ready sale.(2001-10)
Utilitarian
用法：①Utilitarian means based on the idea that the morally correct course of action is the one that produces benefit for the greatest number of people.
例句：By our narrow standards, scrub is not beautiful; neither does it meet our selfish utilitarian needs. (2002-08)
②Utilitarian objects and buildings are designed to be useful rather than attractive.=functional
例句：Stoneware, which had been simple, utilitarian kitchenware, grew increasingly ornate throughout the nineteenth century, and in addition to the earlier scratched and drawn designs, three-dimensional molded relief decoration became popular.(2002-09)
Variable
用法：①Something that is variable changes quite often, and there usually seems to be no fixed pattern to these changes.
例句：This is probably the most common pattern, but it is not invariable.
②N.A variable is a factor that can change in quality, quantity, or size, which you have take into account in a situation.
例句：One of the benefits of a pencil and paper decision-making procedure is that it permits people to deal with more variables than their minds can generally comprehend and remember.(1999-01)
③N.A variable is a quantity that can have any one of a set of values.
Viable
用法：①Something that is viable is capable of doing what it is intended to do.
例句：During the nineteenth century further advances were made, notably Bessemer’s process for converting iron into steel, Which made the material more commercially viable.(1998-08)
②Seeds or eggs are described as viable if they are capable of developing into living beings without outside help.
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