Japan and Germany have the world's oldest populations, but neither country has enough trained health care workers to meet the needs of older adults. So, they are turning to Vietnam for help.日本和德国的人口老龄化在全球最严重,但这两个国家都没有足够多训练有素的医护工作者来满足老年人的需求.所以它们正转向越南寻求帮助.
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