Premonochromator
前单色仪; 前置单色器
🗣️ 情景例句
Are we scheduled to leave on time?
飞机准时起飞吗？
I wonder if the dentist could fit me in early tomorrow?
请问明天一早牙科医生能抽空给我看一下吗？
Good idea! It's much better than having classes! Can I go, too?
好主意！这比上课好得多！我也可以去吗？