self-collected基本解释
adj.镇定的;沉着的;有自制力的
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adj.镇定的;沉着的;有自制力的
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"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"