As a colorless, sweet-smelling liquid, DCA is used in the production of plastics.

作为一种无色、带着甜蜜香味的液体，常被用于塑料生产。

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Washington is served by three airports: Dulles International (IAD), Reagan national (DCA) and Baltimore-Washington International (BWI), connecting DC to the rest of the country and the world.

华盛顿特区有三个机场：杜勒斯国际机场(IAD)里根国际机场(DCA)和巴尔的摩-华盛顿国际机场(BWI)，这些机场把特区与全美国和全世界联系起来。

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Michelakis himself warns that people taking DCA could do themselves serious harm.

米开拉其斯自己就警告人们说，服用DCA可能给自己造成严重伤害。

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Should this money be invested in the markets all at once or dollar-cost averaged (DCA) over time?

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The building has been designed by London-based David Chipperfield Architects (DCA), and was chosen from a field of over 70 international design companies.

BBC: Artist's impression of Pacific Quay bridge