Perpendicularity
n. 垂直, 直立\\n[机] 垂直
📖 牛津释义
perpendicularity
n[U].
🗣️ 情景例句
Don't lose your cool.
要沉住气。
He didn't enjoy losing the game of chess.
他因为下棋输了而索然无味。
and is still non-existent in a number of 'civilized' nations.
今天，在许多文明国家里，义务教育迄今尚未实行。