Sparsity
n. 稀疏, 稀少, 贫乏
🗣️ 情景例句
Hello, Sally. I'm glad to meet you.
你好，萨里，很高兴见到你。
I didn't know whether to send the letter airmail or not.
我不知道是否送航空邮件。
Where is your office?
你们的办公室在哪？