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retardation

/.ri:tɑ:'deiʃәn/

📖 中文释义

  1. n. 迟延, 妨碍, 阻止
  2. [化] 缓聚作用

🔗 释义中的汉语词

📘 English Definition(英文释义)
  1. n. the extent to which something is delayed or held back
  2. n. lack of normal development of intellectual capacities