Ecat
[医][=emission computed assisted tomography]发射计算机体层摄影术
🗣️ 情景例句
Welcome home--
欢迎归来。
She won a scholarship to the state university.
她获得就读洲立大学的奖学金。
In man's early days, competition with other creatures must have been critical.
在人类早期，人类与其他生物的竞争一定是必不可少的。