crankshaft

n shaft that turns or is turned by a crank 曲柄轴.

craft, craftily, craftiness, craftsman, craftsmanship, crafty, crag, craggy, cram, cram-full, crammer, cramp, cramped, crampon, cranberry, crane, crane-fly, cranial, cranium, crank, cranky, crannied, cranny, crap, crape, crappy, craps, crapulence, crapulent, crash, crash barrier, crash helmet, crash-dive, crash-land, crash-landing, crass, crassly, crassness, crate, crater,