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.