Effective reduction
[计] 有效缩小
🧩 词语组成解析
effective
[ɪ'fɛktɪv]
adj. 有效的;起作用的;实际的，实在的;给人深刻印象;
n. [军]现役兵额，有生力量，精兵;
ef出+fect做，制作 +ive形容词后缀 →做出来的 → 有效的
🗣️ 情景例句
When's the last time you took a vacation?
上次你去度假是什么时候？
She couldn't discern the very slight differences between the two.
她无法分辨双方为少的差异。
It's a pleasure.
我很高兴。