sealed junction

例句：

1. 1. The engineer used a special tool to seal the junction.
   工程师使用特殊工具来密封接头。
2. 2. The seam between the two pieces of fabric is sealed with glue.
   两块布料之间的接缝被胶水密封。
3. 3.The sealant was applied to the joint to prevent leaks.
   密封剂被涂在接头上以防止泄漏。