retardation
retardation
/ˌri:tɑ:ˈdeɪʃn; ˌritɑr`deʃən/ n[U]
mental retardation 智力迟钝.
牛津英汉双解词典
edrTRBnvbvbfdvEzudIdQg1m88q5imAx0fJs98kZOqu6gcmlb31bzg
283a108976bcb1d414180a6f469bf1f8
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