potential barrier layer

例句：

1. 1. The potential barrier layerbetween the two countries is stillunclear.
   两国之间的潜在屏障层仍然不清楚。
2. 2.The researchers found that the potential barrier layercould be a key to unlocking thesecrets of life.
   研究人员发现，潜在屏障层可能是解锁生命秘密的关键。
3. 3. The potential barrier layerbetween the two countries has been amajor concern for many years.
   两国之间的潜在屏障层多年来一直是许多国家关注的重点。