Analytic derivation
[计] 解析推导
🧩 词语组成解析
derivation
['dɛrə'veʃən]
n. 引出，导出;衍生，衍生物;[语]词源，派生;出处，由来，起源;
de 离开 + riv流动 + ation表名词 → deriv(e)流自...=起源+ ation表名词 → 词源；来历
🗣️ 情景例句
How many days will it take for my mail to reach its destination?
我的信件到达目的地要用几天？
That was close!
好险！
and beyond six or seven they are worthless.
如果超过六七天，天气预报就没有了任何价值。