大学英语四级单词大全
- utilise
- ugly
- ultimate
- umbrella
- uncle
- uncover
- under
- under control
- under no circumstances
- under fire
- under way
- undergo
- under the weather
- undergraduate
- underground
- underline
- understand
- underneath
- understanding
- undertake
- undo
- undoubtedly
- uneasy
- unfortunately
- uniform
- union
- unique
- unit
- unite
- university
- unlike
- unity
- universal
- universe
- unless
- unload
- until
- unusual
- up
- up against
- up in the air
- up to scratch
- up to the minute
- up to
- up to date
- upon
- upper
- upright
- upset
- upstairs
- up-to-date
- upward
- urban
- urge
- urgent
- us
- usage
- use
- use up
- used
- useful
- useless
- utmost
- user
- usual
- usually
- utility
- utilize
- utter