retard
🇺🇸
/rɪˈtɑːrd/
🇬🇧
/rɪˈtɑːd/
to slow down the growth or progress of something
Early surgery can retard the disease from getting worse.
早期手术可以延缓病情恶化。
a hurtful term for someone you think is very slow or not smart
He called her a retard for not understanding the joke.
他称她为弱智,因为她没有听懂那个笑话。