Spectrosensitometer
光谱感光计
🗣️ 情景例句
Breathe, Albert!
呼吸呀， Albert。
Melissa and Henry have the flowers.
梅丽莎和亨利有花儿。
and we have only to turn to that extraordinary discovery of echo-location in bats to see a case in which the voice plays a strictly utilitarian role.
我们只要看一看蝙蝠回声定位这一极不寻常的发现，就可以探究一下声音在什么情况下有绝对的实用价值。