1、The main function of Linclion pump is to seal off the lubricator.
林肯泵主要作用是密封注油頭。

2、A variety of schemes to either block up or seal off the blowout preventer are in development.
多種封閉或密封防噴裝置的方案也在構(gòu)思之中。

3、Freezing rain can seal off your car and lock you inside.
凍雨會封住你的車，把你鎖在車里。

4、The city should seal off those tunnels.
這個城市應(yīng)該封閉那些隧道。

seal off翻譯