seal off造句
The city should
seal off those tunnels.
这个城市应该封闭那些隧道.
The enemy made a desperate attempt to
seal off the gap through which we had burst.
敌人拼命想堵住我们已经冲开的那个突破口.
Improved injector nozzles
seal off better to keep the process leak - free and the molding operation dry.
改进了的注射喷头密封更好从而杜绝了泄露的问题保持注射过程的干燥整洁.