第一世界

例句：

1. 1. The first world is often associated with the wealthy and developed nations.
   第一世界通常与富裕和发达的国家联系在一起。
2. 2. The first world has a high standard of living, but many people still struggle to make ends meet.
   第一世界的生活标准很高，但许多人仍然挣扎着维持生计。
3. 3. In the first world, education is highly valued and accessible to everyone.
   在第一世界，教育被高度重视且对每个人都是可及的。