用法:
1 chromium (esp when used as a protective coating on other metals) 铬.

用法:
2 yellow colouring matter obtained from a compound of chromium and used in paints 铬黄.

• uncover
• under
• undergo
• undergraduate
• underground
• underline
• underneath
• understand
• understanding
• undertake
• undo
• undoubtedly
• uneasy
• unexpected
• unfortunately
• uniform
• union
• unique
• unit
• unite
• unity
• universal
• universe
• university
• unjust