late Middle English (in the senses serving as conclusive evidence of and making manifest): from Old French demonstratif, -ive, from Latin demonstrativus, from demonstrarepoint out (see demonstrate)
英英释义网络释义
noun
1.a pronoun that points out an intended referent
2.given to or marked by the open expression of emotion;
...架构有六个步骤。分别是引入(recruitment)、示范(demonstration)、简化作业(simplifying the tasks)、维持参与(maintaining participation)、给与回馈(feedback)、及控制挫折感(controlling frustration)等,