瞒住

jù huì de shì tā men jī běn shàng mán zhù le mǎ lì

聚会的事他们基本上瞒住了玛丽。

They managed to keep the party more or less secret from Mary.

tā zài xī dú hái xiǎng mán zhù wǒ

他在吸毒，还想瞒住我。

He was taking drugs and trying to conceal it from me.