inscrutable
adjective uk/ɪnˈskruː.tə.bəl/ us/ɪnˈskruː.t̬ə.bəl/
(尤指人或其表情)高深莫测的,不可测知的
not showing emotions or thoughts and therefore very difficult to understand or get to know
an inscrutable face/expression/smile 神秘莫测的面孔/表情/笑容
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