1. ### is an extension of ### ...是...的扩展(推广)
例句：Rough set theory is an extension of conventional set theory that supports approximations in decision making.
释义：粗糙集理论是传统集合论的一个推广。
出处：《Feature selection using swarm-based relative reduct technique for fetal heart rate》
2. It possesses many features in common with ... 具有很多与..相似的特征
例句：It possesses many features in common with Dempster–Shafer theory of evidence.
释义：它具有许多与Dempster-Shafer证据理论相同的特征。
出处：《Feature selection using swarm-based relative reduct technique for fetal heart rate》