Perpendicularity
n. 垂直, 直立\\n[机] 垂直
📖 牛津释义
perpendicularity
n[U].
🗣️ 情景例句
Do you remember that old desk?
还记得这张旧桌子吗？
The first several months were a difficult time.
所以头几个月过得有些艰难。
She stamped out the letters 'SOS' in the snow.
她在雪地上踩出了“SOS”这3个字母。