retarded

[ri'tɑ:did]

adj.智力迟钝的, 发展迟缓的

例句与用法：

A substance that retards or arrests a chemical reaction.

反催化剂延缓或阻碍化学反应的物质

Lack of sun retards plant growth.

光照不足则植物生长缓慢。

详细释义：

a.

智力迟钝的, 弱智的[Z]

Her younger daughter was mentally retarded.

她的幼女是一个弱智儿童。