lose heart丧失勇气；失去勇气；灰心；泄气lose track失去联系；不之所在；掉去接洽；失去接洽lose weight减肥；瘦身；减轻体重；体重减轻lose one心被…俘去；疯了lose interest不再感兴趣；失去兴趣；不再引起兴趣...