蓖麻油渣

例句：

1. 1.The oil cake is made from castor seeds and has a high nutritional value.
   油饼是由蓖麻种子制成的，营养价值很高。
2. 2.The residue left after the oil is extracted is used as fertilizer.
   提取油后留下的残留物用作肥料。
3. 3.The waste from the oil extraction process is a valuable resource for biofuel production.
   油提取过程中产生的废料是生产生物燃料的宝贵资源。