户口制度

household registration system

• unwitting
• unwritten
• unzip
• up-
• up
• up-beat
• upbraid
• upbringing
• upcountry
• update
• upgrade
• upheaval
• upheld
• uphill
• uphold
• upholster
• upkeep
• upland
• uplift
• upmost
• upon
• upper
• uppish
• uppity
• upright