Towardsthe end of Overdressed, Cline introduced her ideal, a Brooklynwoman named SKB, who, since 2008 has make all of her own clothes—andbeautifully. But as Cline is the first to note, it took Beaumont decades to perfect her craft; herexample can’t be knocked off.
最后一句话，我大概了解要翻译成"她的例子是不可复制的"。但"knock off"是怎么样引申成"复制"的意思的呢？我在词典里没查到有关的意思。
求高人解惑。
the freedictionary: knock off 解释6：Informal To copy or imitate, especially without permission: knocking off someone else's ideas.