Quadriennum utile
[法] 四年有效期
🧩 词语组成解析
a. 有用的；有益的
🗣️ 情景例句
Yes. Here's the survey report issued by the Health Office, which is absolutely reliable.
有。这是由卫生检疫所签发的检验报告，它是绝对可靠的。
She knew that a vocation this year was out of the question.
她知道今年不可能有假期。
The cup is clean.
杯子很干净。