adj.未作解释的;未经说明的;不清楚的;
例句:
He has noticed excessive sweating and unexplained tiredness.
他体会到过度的出汗和难以解释的疲倦.
Unexplained and long time weight loss.
原因不明的较长时间体重减轻.
The diagnosis of unexplained insomnia may involve testing in a sleep laboratory using polysomnography.
诊断失眠及其他睡眠障碍的关键是病史和睡眠实验室监测.