Breakdown of De no salir ahora, la policía os desalojará.
no
no / not
ahora
now
salir
to go out, to leave / to appear, to come out (on the body)
os
to you (plural) / yourselves
la policía
the police
de
if (before an infinitive)
desalojar
to vacate; to evict, to clear (people out of a place)
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