Dohc
abbr. 双顶置凸轮轴（Double Overhead Camshaft）
🗣️ 情景例句
At four o'clock,
四点钟，
He can only speculate as to which horse will win the race.
他只能推测那一匹在赛马中会获胜。
I don't know, she says.
她说“我不知道”。