(1)公共道路
指对公众开放的道路，即任何人都有权使用的道路。

(2)(水上、陆中、空中的)交通干线

• unresponsive evidence
• unruly and dangerous animals
• unsafe
• unsafe bank
• unsafe driver
• unsafe speed
• unsatisfactory title
• unsatisfied judgment funds
• unscheduled assets
• unseated land
• unseaworthy
• unseaworthy ships
• unsecured bond
• unsecured debt
• unsecured note
• unsettled pauper
• unsolemn admissions
• unsolemn war
• unsolemn will
• unsolicited goods and services
• unsound food
• unsound mind
• unsworn testimony
• untenant
• untenantable