adj.直立的；垂直的；正直的
adv.垂直地
n.垂直；竖立；竖钢琴
Only humans have a natural upright posture. 只有人类才有自然直立的姿势。
Please put the back of your seat in an upright position. 请把座位靠背转到垂直位置。
He was a famous upright statesman. 他是一位著名的、正直的政治家。
用作副词 (adv.)Several columns among the ruins still stood upright. 在废墟中依然挺立着几根柱子。
n.垂直；正直
