Ecat
[医][=emission computed assisted tomography]发射计算机体层摄影术
🗣️ 情景例句
Something old.
旧的东西。
No joy without annoy.
喜中有忧。
Later we learnt that there was a very important person on board.
后来我们才得知，飞机上坐了一位非常重要的人物。