Indefatigability
n. 不疲劳, 不屈不挠
🗣️ 情景例句
Quiet!
安静点儿！
Knowledge comes from experience alone.
知识来自经验。
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。