名詞（固定在門上供敲門用的）門環(huán)；吹毛求疵的人；一味批評的人；奶子網(wǎng)絡(luò)挨戶敲門的推銷員；敲擊者；敲門者
1. up to the knocker : 完全地, 十分地, 無可非議地；
名詞
1. There was nothing particular about the knocker on the door, except that it was very large.
門上的門環(huán)沒有什么特別的，只是很大而已。
2. At the rat-a-tat of the knocker her heart flew into her mouth.
聽到敲擊者咚咚聲她的心都懸起來了。
3. What a knocker he is; no matter what we suggest, he finds fault with it.
他真是個吹毛求疵的人；不管我們提議什么他都能挑出毛病來。
4. She is tall with large knockers.
她很高，有一對大乳房。
3. 挑剔的人：knob 按鈕 | knocker 挑剔的人 | knowability 可知性
4. 敲門者：knocked-down 未裝配的 | knocker 敲門者 | knocking 爆震音
1. （固定在門上供敲門用的）門環(huán)
A knocker is a piece of metal on the front door of a building, which you use to hit the door in order to attract the attention of the people inside.