Cernkov radiaion
[电] Cerenkov幅射
🗣️ 情景例句
will read a poem by Robert Frost.
要朗读Robert Frost作的一首诗。
We must have your LC at least one month before the time of shipment.
我们必须在船运前一个月收到你们的信用证。
Yes, but not very.
是的，但不是很害怕。