seal point

例句：

1. 1. The sealing process is crucial for the integrity of the container.
   密封过程对于容器的完整性至关重要。
2. 2. The engineer used a special tool to ensure the sealing point was perfect.
   工程师使用特殊工具确保密封点完美无缺。
3. 3. The sealing point is where the two pieces of metal meet to form a tight fit.
   密封点是两块金属相遇形成紧密配合的地方。