manipulative

善于操纵他人的、工于心计的、爱耍手段的贬义

He was charming at first, but later proved to be manipulative.

他起初很迷人，后来却证明是个爱耍手段的人。

操作的、手动操作的正式

Toddlers develop manipulative skills by stacking blocks.

幼儿透过堆叠积木发展手部操作能力。

教具、操作教具常用复数、教育

The teacher uses manipulatives to explain fractions to young students.

老师用操作教具向小学生讲解分数。