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
Did she say why she had to leave today?
她说了她为什么今天非走不可吗？
Strike while the iron is hot.
见机行事。称热打铁。
The men took him in their boat to the castle on the coast where he was now held prisoner.
这些人用船把他送到海岸上的城堡里，如今他被囚禁在这儿。