losevt.丢失；失败；削减；丧生；看不到；亏损；迷失vi.失败；经受损失；走慢lose face丢面子lose timevi.延误(失去时机)lose fame失去声誉lose rate丢失率lose true失真lose data丢失数据lose leaf落叶lose mass质量转化lose cast失去社会地位lose dose低剂量