Premonochromator
前单色仪; 前置单色器
🗣️ 情景例句
if people took the time to read.
只要人们肯花时间去阅读。
Is this your handbag?
这是你的手提包吗？
Suddenly, there was a slight trembling sound from below, and the captain went down to see what had happened.
突然，从船舱下部传来一声微颤音，船长走下船舱去查看究竟。