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standing bolt-upright (Interex); stand at attention; stand upright (There was, however, something very strange about the disturbing duo: they spoke in a monotone, robotic, style, their arms were constantly by their sides, and they stood upright – almost like the military on guard duty." – стояли навытяжку, руки были вытянуты по швам/вдоль тела  mysteriousuniverse.org ART Vancouver) | |||
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