Our door knocker is cast in solid brass.
我们的门环是纯铜铸造的。
The salesman pounded the door knocker.
这位推销员猛拍门环。
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。
Number 30 has a red door and a brass knocker.
30号有一扇红门和一幅铜门环。
Number 30 has a red door and a bra ss knocker.
30号有一扇红门和一幅铜门环。
Number 30 has a red door and a bra ss knocker.
30号有一扇红门和一幅铜门环。
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