Translation of "zamaskovat" into English

A mohlo by to vysvětlit, proč by je čínská vláda chtěla zamaskovat?

And could this explain why the Chinese government would want to conceal them?

Měl byste se zamaskovat, nebo obléknout, až bude čas.

You ought to camouflage up, sir, or get the scrim up if you're stopping.

Kdokoliv volal, tak se dost snažil zamaskovat svůj hlas.

So whoever made that call sounded like he was trying really, really hard to disguise his voice.