retard
v[Tn]
(fml 文)
1 make (sth) slow or late 使(某物)放慢或迟缓
retard the mechanism, eg of a clock 使机械装置减速(如时钟的)
retard thespark, eg of an engine 使点火延迟(如发动机的).
2 slow the progress or development of (sb/sth); hinder 阻碍(某人[某事物])的进步或发展; 妨碍
Lack of sun retards plant growth. 光照不足则植物生长缓慢.