not anticipated; "unanticipated and disconcerting lines of development"- H.W.Glidden; "unforeseen circumstances"; "a virtue unlooked-for in people so full of energy"; "like a bolt out of the blue" 同义词：unanticipated, unforeseen, out of the blue,
例句与用法
1.
His hand and shoulder were twitching from the unlooked-for contact . 由于这不期而遇的相逢，他的手和肩部在抽搐。
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