vertical, perpendicular, upright, erect, plumb

名詞 upright:

1. a vertical structural member as a post or stake
   同義詞：vertical
2. a piano with a vertical sounding board
   同義詞：upright piano

形容詞 upright:

1. in a vertical position; not sloping
   同義詞：unsloped
2. of moral excellence
   同義詞：good, just
3. upright in position or posture
   同義詞：erect, vertical

1. The cross-piece is mortised into the upright post.
   橫梁和立柱是用榫眼接合一起的。
2. She jerked upright in surprise.
   她驚訝得跳了起來。
3. An empty sack cannot stand upright.
   [諺]空袋子，立不直。
4. Morally upright; honest.
   正直的，誠實的
5. Several columns among the ruins still stood upright.
   在廢墟中依然挺立著幾根柱子。