Artificial intelligent assistant

reserved

reserved
/rɪˈzɜ:vd; rɪ`zəvd/ adj
(of a person or his character) slow to show feelings or express opinions(指人或性格)矜持的, 寡言的, 内向的
    a reserved disposition, manner, etc 矜持的性格、 态度等. Cf 参看 communicative.

牛津英汉双解词典

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