ineffective
🇺🇸
/ˌɪnɪˈfektɪv/
🇬🇧
/ˌɪnɪˈfektɪv/
adjective
R
not producing the desired result; not working well
The teacher found that using punishments was ineffective in encouraging good behavior.
老师发现使用惩罚在鼓励良好行为上是无效的。
translation
无效的