Effective sectional area
[机] 有效剖面积
🧩 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
sectional
['sɛkʃənl]
adj. 拼合而成的;局部的;部分（地区）的;断面的;
area
['ɛrɪə]
n. 地区;区域，范围;面积，平地;领域;
🗣️ 情景例句
I've got it. This one's on me.
我都付了。这一顿我请客。
He told me to take these pills every four hours.
他告诉了我每4小时吃一次这些药片。
Because of this, he has not been able to get his own car into his garage even once.
为此，他甚至一次也没能把自己的车开进车库。