1.
One that raps or strikes, especially a door knocker.
敲击者敲击或打击的人，尤指敲门者
2.
There is another knock; I'll go and answer the door.
又有人敲门，我去开门。
3.
We knocked the door, but no one answered.
我们敲门，但没有人开门。
4.
There came a gentle tap on the door.
门上有了轻微的敲门声。
5.
Don' t open the door no matter who knocks.
不要开门，不管是谁敲门。
6.
He opened the door in response to a knock.
他应敲门声而开了门。
7.
He knocked on the door and said, "Open it up before I kick it in."
他敲敲门，说：“开门，快一点，不然我要把门踢开。”
8.
He saw a small house, and knocked on the door.
他看到一间小屋子，便敲了敲门，
9.
He rapped loudly at the door with his knuckles.
他用手指节重重地敲门。
10.
Blows rained on the door.
敲门声像雨点一样.
11.
There was a furious knocking at the door.
有人在猛烈地敲门。
12.
Suddenly strikes a sound of knocking.
突然响起一阵敲门声。
13.
Soon there came a knock on the door,
不久后，他们听到敲门声，
14.
There was a knock again.
敲门声又响了起来。
15.
a knock on the door aroused us.
敲门声把我们唤醒了。
16.
At last a knock was heard.
最后，传来了敲门声。
17.
the family hears knocking at the door again.
一家人又听到敲门声。
18.
Then, there is a knock at the door.
接着，传来了一阵敲门声。