贱买贵卖

buying cheap and selling dear

• universally
• universe
• university
• unknown
• unless
• unlike
• unlikely
• unlimited
• unload
• unlock
• unmarried
• unpaid
• unpleasant
• unprecedented
• unqualified
• unrealistic
• unreasonable
• unrest
• unsafe
• unstable
• unsuccessful
• untie
• until
• untiring
• untreated