Dohc
abbr. 双顶置凸轮轴（Double Overhead Camshaft）
🗣️ 情景例句
You should take the number 1 subway.
应当搭一路地铁。
He is a gentle horse that never cast his rider.
驯良的马绝不会把骑手甩倒。
That's fantastic!
那真是棒极了！