Unknowns
n. 未知事件（unknown的复数）
🗣️ 情景例句
maybe you should think about becoming a writer.
也许你应考虑成为一名作家。
Forest fire caused by lava
熔岩引起的森林大火
A lot of things can change over twenty-one years.
21年了，许多东西都可能改变的。