sealed upright silo

例句：

1. 1.The engineer sealed the upright silo to prevent leaks.
   工程师密封了直立筒仓以防止泄漏。
2. 2. The company used a sealing agent to ensure the integrity of the upright silo.
   公司使用密封剂来确保直立筒仓的完整性。
3. 3.The upright silo was designed to store grain for long-term storage.
   直立筒仓被设计用来长期储存谷物。