它的基本实现对于每个对象都调用服务器(请求国家列表)。

Its basic implementation called the server (to get the countries list) for each object.

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在文件顶端，为years和countries数组预先加载年份、国家列表及其扫盲值。

At the top of the file, preload the years and countries arrays with the years, and the list of countries and their literacy values.

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该提案修订了美农业部的允许和禁止物质的国家列表法规，涉及所有种类的有机食品。

The proposal amended the regulation on the national list of substances permitted and prohibited by the US Department of Agriculture, involving all kinds of organic food.

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