Premonochromator
前单色仪; 前置单色器
🗣️ 情景例句
Do you have family in New York?
在纽约有亲人吗？
We have mainly adopted some usual international practices.
我们主要采取了一些国际上的惯例做法。
The writer stated that Rastus was in safe hands and would be returned immediately if Mrs.Ramsay paid a ransom of $1,000.
写信人声称拉斯特斯安然无恙，只要拉姆齐太太愿意支付1，000 英镑赎金，可以立即将猫送还。