self-pos·sessed /-pəˈzɛst ||ˈsɛst/
 (a.)鎮靜的,冷靜的,沈著的
 Self-pos·sessed a. Composed or tranquil in mind, manner, etc.; undisturbed.
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 self-possessed
      adj : in full control of your faculties; "the witness remained
            collected throughout the cross-examination"; "perfectly
            poised and sure of himself"; "more self-contained and
            more dependable than many of the early frontiersmen";
            "strong and self-possessed in the face of trouble"
            [syn: collected, equanimous, poised, self-collected,
             self-contained]