详细解释:a. 击倒的, 可拆卸的, 廉价的
n. 压倒, 可拆卸家具
英语解释：
名词 knockdown:
a blow that knocks the opponent off his feet形容词 knockdown:
(furniture) easily assembled and dismantled例句：
If was the last one they had and they sold it me at a knockdown price.这是他们手中的最后一个，他们以低价卖给了我。