(1)空间的计算单位

(2)亲等

(3)等级

(4)港口；任何可以使船舶登陆的地方

• unlimited
• unliquidated claim
• unliquidated damages
• unliquidated demand
• unlisted security
• unlisted stock
• unloading
• unlooked for mishap or untoward event
• unmarketable title
• unmarried
• unnatural offense
• unnatural will
• unnecessary exposure
• unnecessary exposure to danger
• unobjected to
• unoccupied
• unoccupied property
• unoffered lands
• UN official documents
• unofficial notes
• unofficial opinion
• unofficial primary
• unofficial publication
• unofficial report
• unopened way