retardation

n.

延迟；留级；制动；光程差

mental retardation 智力迟钝；智能缺陷（等于mental deficiency）

growth retardation生长迟缓；生长阻滞

1. A score below 70 may indicate mental retardation.
   如果分数低于70可能表明智力迟钝。
2. The rearward regiments are in painful retard.
   后续部队受到令人难以忍受的阻碍。
3. Many factors can lead to growth retardation in unborn babies.
   许多因素可以导致胎儿发育迟缓。

The Influence of Retardation on the London-van der Waals Forces
Brain Aging Correlates: Retardation by Hormonal-Pharmacological Treatments
Insulin resistance and growth retardation in mice lacking insulin receptor substrate-1.
The rice tapetum degeneration retardation gene is required for tapetum degradation and anther development.
Retardation by aminoguanidine of development of albuminuria, mesangial expansion, and tissue fluorescence in streptozocin-induced di...
Diffusion in the rock matrix: An important factor in radionuclide retardation?
Ocular retardation mouse caused by Chx10 homeobox null allele: impaired retinal progenitor proliferation and bipolar cell differenti...
Postnatal malnutrition and growth retardation: an inevitable consequence of current recommendations in preterm infants?
Mice lacking the vitamin D receptor exhibit impaired bone formation, uterine hypoplasia and growth retardation after weaning
A prospective study of the relationship between specific language impairment, phonological disorders and reading retardation.