yán / jiū / rén / yuán / tōng / guò / qíng / gǎn / fēn / xī / liǎo / jiě / yòng / hù / duì / chǎn / pǐn / de / kàn / fǎ研究人员通过情感分析了解用户对产品的看法。Researchers use sentiment analysis to understand users' opinions of the product.