noun 下载 🔗分享 齿轮, 齿轮盘。 A wheel with a toothed rim, intended to engage with others, or similar equipment, to form a gear Examples : "The old clock stopped because one of the brass gearwheels had broken its teeth. " 那个老钟停了,是因为其中一个黄铜齿轮崩掉了几颗齿。 machine technical part device technology system 与AI对话词汇游戏阅读练习