retardation基本解释
n.智力迟钝;阻滞
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n.智力迟钝;阻滞
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"the deceleration of the arms race"
"flame-retardant"
Determine..the acceleration or retardation of the winter.
出自:B. StillingfleetGrowth retardation occurs in rabbits congenitally infected with rubella.
出自:NaturePsychopathy is not generally identified with mental retardation.
出自:G. Sereny