Rather than simply giving you a collapsible tree view of code, the object browser gives you a live representation of the objects themselves — even of the importable modules in your PYTHONPATH.
对象浏览器不仅仅为您提供了一个可折叠树形式的代码视图，它还让您可以看到对象本身的生动的描述——甚至包括那些在您的PYTHONPATH中可以导入的那些模块。
Barriers that make importable goods more costly in the domestic market raise the cost of producing for export.
设置使国内市场上的进口商品的价格更加昂贵的壁垒，会提高出口商品的生产成本。
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