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
Would you please make a record of all your foreign currencies?
请把你所带的外币登记一下,好吗?
According to Mr. Green,this is a complicated problem.
对于格林先生,这是一个复杂的问题。
At last he said,I think I can help him. He'll be OK if I do one small operation.