用法:
1 (with vs and adjs forming ns 与动词和形容词结合构成名词) condition or state of ...的状况或地位:
boredom *
freedom.

用法:
2 (with ns 与名词结合) (a) rank or domain of ...的职位、 级别、 地位或领域:
dukedom *
kingdom.
(b) group of ...的群体:
officialdom.

• reach
• react
• reaction
• read
• readily
• reading
• ready
• reality
• realize
• realm
• reap
• rear
• reason
• reasonable
• rebel
• rebelion
• recall
• receipt
• receive
• receiver
• recent
• recently
• reception
• recession
• reckon