Sparsity
n. 稀疏, 稀少, 贫乏
🗣️ 情景例句
This is something you'll have to work out yourself.
这就是你必须自己做出决定的事情。
You look tired. Have you been getting enough sleep?
你似乎累了。睡眠充足吗？
Yes, sir?
什么事，先生。