seal up 雅思托福

They sealed up the cracks in the window to stop the icy wind from blowing in.

他们把窗户的缝隙封起来, 不让寒风吹进室。

Pot door is sealed up with gasing type silicon rubber , is sealed and reliable , the length of service life is changed per 3 years one time.

采用充气式硅橡胶密封，密封可靠，使用寿长，每三年更换一次。