gearhead
noun /ˈɡɪəhed/
/ˈɡɪrhed/
(informal)- a person who is very enthusiastic about cars or new technical devices and equipment
设备发烧友（指对汽车或新科技设备着迷者） - He's a total gearhead—can't keep away from the race track.
他是个十足的赛车迷，一刻也离不开赛车道。 - Like most keen cyclists I’m a bit of a gearhead.
像大多数热衷于骑自行车的人一样，我有点迟钝。
- He's a total gearhead—can't keep away from the race track.