Qdr
数码定量放射照相
🗣️ 情景例句
Thanks, Grandpa.
谢谢你， 爷爷。
Please make sure that the goods be protected from moisture.
请保证货物不受潮。
as the wave leaves the particles behind back to its starting point again.
当波浪把微粒留在身后时又回到出发点。