托福作文
托福写作对于语言贫乏的同学们来说，如何表达更生动就成了一个问题，今天就和我爱学习网的小编一起来看看托福写作如何将重要表达得更生动？
TPO 例句
Trade was the mainstay of the urban economy in the Middle East， as caravans negotiated the surrounding desert， restricted only by access to water and by mountain ranges. [TPO 16-1-1]
自从中东地区的商旅们成功跨越周围的戈壁，只有水路和山峦还是障碍时，贸易就成为了中东地区城市经济的主要支柱。
重点词汇
the mainstay of something
A mainstay holds everything together， whether it’s your grandmother who acts as the anchor of your whole crazy family， a pillar that physically keeps a building from falling down， or the job that enables you to pay your rent every month. The noun mainstay is originally a nautical term meaning the rope that stabilizes two masts on a sailboat， and since the 1780s it’s been used to mean “chief support.”
a） an important part of something that makes it possible for it to work properly or continue to exist
Agriculture is still the mainstay of the country’s economy.
Cocoa is the country’s economic mainstay.
Even during conflict， I argue that family and friends are the mainstays of this world.
Salon（Nov 25， 2016）
b） someone who does most of the important work for a group or organization：
She was the mainstay of the team.
He has been a mainstay at baseball and basketball games.
New York Times（Nov 14， 2016）
Trump countered on election day， piling up huge majorities among the non-college-educated， blue-collar whites who have long been the mainstay of his support.
Los Angeles Times（Nov 09， 2016）
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