Photodensitometer
光稠计, 光密度计
🗣️ 情景例句
A year is really a short time, and later you will be glad you postponed getting married.
一年其实是很短的，过后你将会为你推迟了婚期而感到高兴的。
A little child is the sweetest and purest thing in the world.
幼儿是世界上最可爱和最纯洁的。
Then, jumping into the car, he drove off as quickly as he could.
然后跳进车里，以最快的速度把车开走了。