Scientific problems
[计] 科学问题
🧩 词语组成解析
n. 问题；难题（problem的复数）
🗣️ 情景例句
She just wants love and affection.
她需要爱和关怀。
What is known to three is known to everybody.
一件事情三个人知道就人人知道。
No, there aren't (any).
不，没有。