kingpin
n
1 (engineering 工) vertical bolt used as a pivot 主销; 主螺栓.
2 (fig 比喻) essential person or thing 主要的人或事物
He's the kingpin of the whole team. 他是全队的主力.
🗣️ 情景例句
I understand, Grandpa.
我能体会你, 爷爷。
Please come over any time.
请随时光临。
He say he's just arrived in Scotland. He says he's staying at a Youth Hostel.You know he's a member of the Y.H.A.