manufacture 一般指机器大量制造的产品。
produce 多指农产品(尤指蔬菜水果等)。
product 一般指工业产品，也可泛指各种各样的产品。
product ion含义广泛，不同场合有不同的意思，可表示“产品，产物”，尤指人类智力或艺术劳动的产品。
参考例句
1. Let me tell you about our product. 关于产品一事让偶向你说明。
2. Let me tell you about our product. 对于产品一事让我向你说明。
3. We always serve the best product and service to our customers. 我们始终以最好的产品和服务给我们的顾客。
英英解释
n.
1. commodities offered for sale
2. an artifact that has been created by someone or some process
3. a consequence of someone's efforts or of a particular set of circumstances
4. a chemical substance formed as a result of a chemical reaction
5. a quantity obtained by multiplication
6. the set of elements common to two or more sets
