Concierges
n. 看门人, 门房( concierge的复数形式 )
🗣️ 情景例句
Thank you.
谢谢。
Don't repeat everything I say!
不要学我说话！
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。