他们有意识地造成的贸易壁垒加重了19世纪30年代的经济萧条，紧随其后的就是军事侵略，这使得消极情绪更加浓郁。

As they were conscious of the role played by the trade barriers adding to the economic depression in the 1930s', followed by the military aggression which rose after depression.

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文章指出，从近期看，加入世界贸易组织对于中国经济的积极效应大于消极效应；

The paper argues that in the short run the effect of China's entering into WTO on its economy is rather positive than negative;

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从不同的角度看，技术性贸易壁垒具有“积极”和“消极”两方面的作用。

From different point of views, TBT has both "positive" and "negative" impacts.

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