Sparsity
n. 稀疏, 稀少, 贫乏
🗣️ 情景例句
In the Spring and Autumn period, copper and iron chopsticks came into being.
在春秋时代又出现了铜制和铁制的筷子。
When did you join the oranizetion?
你什么时候加入这个团体的？
That sounds like a good idea. I have a few friends I could ring to see if they're free.
听起来是个好主意。我可以打电话给我的几个朋友看看他们是否有空。