Total luminous flux
[电] 光源在各方向的总光线发射
🧩 词语组成解析
🗣️ 情景例句
In the Spring and Autumn period, copper and iron chopsticks came into being.
在春秋时代又出现了铜制和铁制的筷子。
A police dog follows a scent.
一条警犬在追踪着气味。
I read about you in the newspaper and decided to come and hear you play.
我在报纸上看到了你的情况，于是决定来听你演奏。