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
It's 5:00 p.m. today.
今天下午5点整。
What? Already? Won't you have more coffee?
怎么,已经要走了?要不要再喝点咖啡?
Thus the rods, by falling, and by the direction in which they fell,