- ugly
- ultimate
- umbrella
- uncle
- under
- undergo
- undergraduate
- underground
- underline
- underneath
- understand
- understanding
- undertake
- unemployment
- unfair
- unfortunate
- uniform
- union
- unique
- unit
- unite
- universal
- universe
- unless
- unprecedented
- until
- unusual
- up
- up-to-date
- upon
- upper
- upright
- upset
- upward
- urban
- urge
- urgent
- us
- usage
- use
- used
- useful
- useless
- usual
- utilize
- utmost
- utter
成人英语MPA单词单词大全〔U 〕课程包含47个英语单词词汇。