limitation
n.限制；局限；极限；起限制作用的规则（或事实、条件）
网络解释.局限性；定额；局限；时效
词形变化:
复数：limitations
obstruction adaptation qualification contraction constraint provision reservation ceiling
双语例句
1. 1 . This drug has one important limitation . Its effects only last six hours.
这种药有一个严重缺陷：它的药力只能持续6个小时。
来自柯林斯例句