Sparsity
n. 稀疏, 稀少, 贫乏
🗣️ 情景例句
I'm so tired, I have to take a nap when I get home.
我太累了，回到家后一定要睡上一会儿。
He is not interested in money matters.
他对金钱问题不感兴趣。
Why?what happened.
为什么？怎么啦？