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
In town. At the hardware store.
在镇上。在五金行里。
I don't know what time it is.
我不知道现在几点钟。
The wagging dance of the honey bee, therefore, did show the direction of a feeding place.