Druum cam
[机] 圆筒凸轮
🧩 词语组成解析
n. 凸轮, 计算机辅助制造, 中央地址存储器\\n[计] 计算机辅助制造; 计算机辅助生产
🗣️ 情景例句
But, Daddy, I thought ...
但是， 爸爸 ，我想……
Had so much fun
玩得开心
he had great difficulty in controlling the car because a tyre burst during the first run.
但他很难把汽车控制住，因为在开始的行程中爆了一只轮胎。