liaison circuit with highway crossings within the station

例句：

1. 1.The liaison between the two countries has been improving.
   两国之间的联络正在改善。
2. 2. He was a liaison officer during World War II.
   他在第二次世界大战期间担任联络官。
3. 3. The liaison between the two companies is crucial for their success.
   两家公司之间的联络对于它们的成功至关重要。