Emptiness problem
[计] 空集问题
🧩 词语组成解析
emptiness
['emptinis]
n. 空虚;空腹;无知;无能;
🗣️ 情景例句
The climate here is always hot, summer and winter alike.
这里的气候总是那么热，夏季与冬季都一样。
How much is the interest a year?
每年利息多少？
Good morning, teacher.
老师早上好！