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
We would expect to hold them until at least the end of this year.
我们会保持这些价格不变，至少直到今年年底。
The police will never buy that story.
警方绝对不会相信这个说法。
Mr. Smith taught English at a school.
史密斯先生在一所学校教英语。