我反对那种认为年轻人只对流行音乐感兴趣的臆断。

I object to the ___presumption that young people are only interested in pop music.

我们的司法制度建立在无罪推定的基础上。

Our justice system is based on the ___presumption of innocence.

平均年龄增加的积极影响依赖于一种假定，即人们的健康状况允许他们像年轻人一样生活。

The positive effects of an increased average age depend on the ___presumption that people's health allows them to live like younger ones.