Petards
(petard 的复数) n. 攻城炸药, 爆竹
🗣️ 情景例句
That's good, I thought I was late.
太好了，我还以为我来迟了呢。
Let's go out for a drive.
兜风去。
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。