hubKK [hʌb] /hʌb/發音名詞1中心、核心、重鎮The city has become a hub for technology startups.這座城市已成為科技新創公司的中心。2樞紐、轉運中心交通Most international flights connect through this airport hub.大多數國際航班都在這個機場樞紐轉機。3集線器電腦Plug the keyboard and mouse into the USB hub.把鍵盤和滑鼠接到 USB 集線器上。4輪轂、轂The mechanic greased the hub before replacing the wheel.技師在裝回輪子前先在輪轂上抹了潤滑油。