1、One is to try to seal up any obvious cracks and crevices.
其一是密封任何顯眼的缺口裂縫。

2、seal up the gas hermetically within the vessel
把氣體密封在容器里

3、seal up pornographic literature
查封黃色書刊

4、Some of the research we did studied earphones that completely seal up the ear canal.
經(jīng)過我們研究，發(fā)現(xiàn)有的耳塞能完全密封住耳槽。

5、You must seal up the envelope before mailing the letter.
你在寄信前必須先將信封密封。

6、We seal up the windows when winter comes.
冬天來臨時，我們密封窗戶。

seal up翻譯