Effective area
[计] 有效面积
🧩 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
area
['ɛrɪə]
n. 地区;区域，范围;面积，平地;领域;
🗣️ 情景例句
This is a little difficult for her.
这对她来说有点不习惯。
It's been 5 years since I last saw you.
我已5年没见你了
You can't buy them in the shop before eight o'clock.
上午八点之前你在商店里是买不到东西的。