Effective aperture
[化] 有效孔径
🧩 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
in the school and loving every minute of it.
在学校 ，且乐此不疲， 时时如此。
A good book is a best friend who never turns his back upon us.
一本好书，莫逆之交。
Some have nuts in them, and some have meat or eggs.
有些里面有果仁，有些有肉或蛋。