close junction

例句：

1. 1. The scientists found that the cells had a close junction between them.
   科学家们发现细胞之间有紧密连接。
2. 2.The road was so narrow that it was difficult to pass through without hitting a close junction.
   这条路非常窄，很难不撞到狭窄连接点通过。
3. 3. The researchers believe that the close junction may be responsible for the disease's spread.
   研究人员认为这种紧密连接可能是疾病传播的原因。