flip side
noun [ S ] uk/ˈflɪp ˌsaɪd/ us/ˈflɪp ˌsaɪd/
反面；负面；不受欢迎的一面
the opposite, less good, or less popular side of something
We're now starting to see the flip side of the government's economic policy. 我们现在开始看到政府经济政策不好的一面。
old-fashioned（唱片的）背面
the less popular side of a record