noun ダウンロード 🔗共有 歯車 A wheel with a toothed rim, intended to engage with others, or similar equipment, to form a gear Examples : "The old clock's gearwheels turned slowly, marking the passage of time. " 古い時計の歯車はゆっくりと回り、時の流れを刻んでいた。 machine technical part device system industry technology AIとチャット語彙ゲーム読解練習