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triplicate
one of three copies, any of three things that correspond to one another exactly
balusters
a railing at the side of a staircase or balcony to prevent people from falling
steam iron
a pressing iron that can emit steam
life-sustaining
performing an essential function in the living body blood and other vital fluids|the loss of vital heat in shock|a vital spot|life-giving love and praise
post and lintel
a structure consisting of vertical beams (posts) supporting a horizontal beam (lintel)

Бусад мэдээлэл