Pect
[化] 正电子发射断层扫描
🗣️ 情景例句
As soon as possible.
越快越好。
Yes, and I hope we can have some snow this winter.
是的，我希望今年冬天会下雪。
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。