engelska-spanska översättning av envelope

sobre¿Por qué cabe una hoja A4 en un sobre? Why does a sheet of A4 fit into an envelope? Quisiera volver sobre la dotación financiera. I would like to return to the financial envelope. Se han distribuido las papeletas y los sobres. The ballot papers and envelopes have been distributed.

A paper or cardboard wrapper used to enclose small, flat items, especially letters, for mailing
Something that envelops; a wrapping
A mathematical curve, surface, or higher-dimensional object that is the tangent to a given family of lines, curves, surfaces, or higher-dimensional objects
The shape of a sound, which may be controlled by a synthesizer or sampler
An enclosing structure or cover, such as a membrane; a space between two membranes
The nebulous covering of the head or nucleus of a comet; a coma

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