unlettered造句怎么写

They are among Mexico's poorest, most unlettered and most rebellious people, with weak property rights and rapidly disappearing forests.

Tramps, unlettered types as nearly all of them are, face their poverty with blank, resourceless minds.

Had this rough and unlettered man gathered a perfectly clear perception of the succession of ideas through which he had, by degrees, mounted and descended to the lugubrious aspects which had, for so many years, formed the inner horizon of his spirit?