door-knocker

基本解释

There was a big, metal door-knocker on Scrooge's door.
在史高基的门上有一个巨大的，金属的门环。
I could not have completed my third snore when there came a furious ringing at the street-door bell, and then an impatient thumping at the knocker, which awakened me at once.
我还没打完第三个呼噜，大门的门铃就猛烈地响了起来，接着是急促的敲门声，立刻就把我惊醒了。
baywatch.cn
Behind an innocuous-looking teak door, however, with its intricate carvings and ornate brass knocker, was the Captain's Bar, teeming with men swigging beer and downing stale roasted peanuts.
船长酒巴就在那扇看起来无害的柚木门后，门上有错综复杂的雕刻品以及华丽的黄铜门环，然而，酒巴间坐满了大口喝啤酒的男人们，就着烤好的陈味花生。