Maraca
n. 沙球
🗣️ 情景例句
I'm not sure. I'll have to check.
我不能确定，我必须查一下。
He always plays the pinball machine.
他通常玩游戏机。
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。