Sigmoidosigmoidostomy
[医] 乙状结肠乙状结肠吻合术
🗣️ 情景例句
Nervous?
紧张？
Learn to creep before you leap.
循序渐进。
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。