Ecat
[医][=emission computed assisted tomography]发射计算机体层摄影术
🗣️ 情景例句
He is a good speaker of English.
他英语说得非常流利。
He's absorbed in his book.
他全神贯注地读书。
Is it in one of your pockets ?
那张纸在你的口袋里吗？