first-world country
... 国际条约international treaty 第一世界国家first-world country 第二世界国家second-world country ...
基于16个网页-相关网页
中国是第一世界国家。
China is a first world country.
youdao
尽管Waller没有具体地介绍这种服务在第一世界国家中要如何使用，但他的确给了一些提示。
And although Waller didn't make any concrete statements about how this service could be used in first-world countries, he did make some hints.
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