在英文維基看到以下句子，請問prepare在這裡是什麼意思? 完全看不懂意思...(抱歉可能太長.但擔心我隨意斷句可能造成誤解)

請問是:Sprat有時會被其他魚替代，例如19世紀開始以anchovies或有時以sardine替代來製作產品。

或: 有時會以Sprat替代anchovy和sardine?

謝謝

Sprats are sometimes passed for other fish; products sold as having been prepared from anchovies (since the 19th century) and sardines are sometimes prepared from sprats.