shallow donor state

例句：

1. 1.The shallow waters are not suitable for swimming.
   浅水不适合游泳。
2. 2. The shallow understanding of the issue is limiting our progress.
   对这个问题的肤浅理解正在限制我们的进展。
3. 3.The shallow knowledge of history can only provide us with limited insights.
   对历史的肤浅知识只能提供我们有限的洞见。