neutral ground

例句：

1. 1. The neutrons are scattered across the neutral ground.
   中子在中立地带四处散开。
2. 2.The scientists used a neutral ground to test the theory.
   科学家们用一个中立地带来测试这个理论。
3. 3. During the negotiations, they reached a neutral ground on the issue of trade.
   在谈判过程中，他们就贸易问题达成了一个中立地带。