retard
verb [ T ] formal uk/rɪˈtɑːd/ us/rɪˈtɑːrd/
阻碍;减缓
to make something slower
A rise in interest rates would severely retard economic growth. 利率提高会严重阻碍经济发展。
retard
noun [ C ] offensive uk/ˈriː.tɑːd/ us/ˈriː.tɑːrd/
智力迟钝者；弱智；笨蛋
a stupid or mentally slow person
I'm not playing with him, he's a total retard. 我才不跟他玩呢，他整个一大笨蛋。