ineffective
adj
not producing the required effect(s) 不起作用的; 无效果的; 效果不佳的
use ineffective methods 使用无效的方法
She is totally ineffective as a teacher, ie She cannot teach satisfactorily. 她当老师全然不称职.
🗣️ 情景例句
Hello. Is this the Old Country Inn?
喂 ,是Old Country Inn吗?
I'm speechless.
我也无话可说了。
A lot of people can't tell the difference between an American accent and a Canadian accent.