seal off造句
The city should
seal off those tunnels.
這個城市應該封閉那些隧道.
The enemy made a desperate attempt to
seal off the gap through which we had burst.
敵人拼命想堵住我們已經沖開的那個突破口.
Improved injector nozzles
seal off better to keep the process leak - free and the molding operation dry.
改進了的注射噴頭密封更好從而杜絕了泄露的問題保持注射過程的干燥整潔.