sprocket

n. 链轮齿

spring, spring balance, spring chicken, spring greens, spring onion, spring up, spring-clean, spring-tide, springboard, springbok, springiness, springtide, springtime, springy, sprinkle, sprinkler, sprinkling, sprint, sprinter, sprite, sprout, spruce, sprucely, spruceness, sprung, spry, spryly, spryness, spud, spud-bashing, spume, spun, spun glass, spun silk, spun sugar, spunk, spunky, spur, spurious, spuriously,