Positrocephalogram
[医] 阳电子脑瘤定位[描记]图
🗣️ 情景例句
No problem.
小事一桩。
One beats the bush, and another catches the birds.
坐享其成。
Once the oxygen content of the air had risen to 25% it was ready to burn.
一旦氧气在空气中的含量达到25%，它就要燃烧。