Turn a blind eye 熟视无睹 To ignore an action, even though one should do something about it Example: Parents will spoil their children if they constantly turn a blind eye to their bad behavior. Keep an eye on 照看,密切注视 To watch carefully; to look after Example: Keep an eye on my purse – I'm just going to the bathroom. Lose face 丢脸 To have one's reputation spoiled; to be embarrassed Example: The large drug houses have lost face, because smaller companies are selling similar products at a cheaper price! Lead the field 处于领头地位 To be the most successful person or group in an activity Example: For decades, the House of Dior led the field in elegant fashion design.