He might try to masquerade as a policeman.

他也许会设法化装成警察。

The local paper is full of gossip masquerading as news.

这份地方报纸尽是些包装成新闻流言蜚语。

PFOA and other related long-chain fluorochemicals stick to blood proteins and masquerade as digestive acids.

PFOA和其他长链含氟化合物会附著在血液里蛋白质，假装成消化酸分子。