Artificial intelligent assistant

effectual

effectual
/ɪˈfektʃuəl; ɪ`fɛktʃʊəl/ adj
(fml 文) (not used of people) producing the intended result (不用於指人)产生预期结果的, 有效的
    take effectual action, measures, steps, etc 采取有效行动、 措施、 步骤等.

牛津英汉双解词典

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