Optical constants
[电] 光学常数
🧩 词语组成解析
n. 常量, 常数；物理常数（constant的复数）
🗣️ 情景例句
Will you see him again?
你会再见他吗？
He's a very hard man to please.
他是一个很难讨好的人。
After her departure, Aunt Harriet discovered that there were piles of empty wine bottles of all shapes and sizes neatly stacked in what had once been Bessie's wardrobe.
贝西走后，哈丽特姑妈发现在贝西以前用过的衣柜里整整齐齐地放着一堆堆形状各导、大小不一的酒瓶子。