双语例句
The first cases took place at the border of three post-conflict impoverished countries that didn't have a very good public health infrastructure.
第一批病例发生在冲突后的三个贫穷国家的边界，这些国家没有良好的公共卫生基础设施。
词典释义：
public health infrastructure
时间: 2026-02-26 18:44:15
公共卫生基础设施