Leftmost derivation sequence
[计] 最左推导序列
🧩 词语组成解析
a. 最左边的
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
sequence
['si:kwəns]
n. [数]数列，序列;顺序;连续;片断插曲;
vt. 使按顺序排列，安排顺序;[生化]确定…的顺序，确定…的化学结构序列;
🗣️ 情景例句
We have finally concluded the transaction through negotiation.
经过谈判，我们终于达成了一笔交易。
I was wondering if you'd let me stay with you for a few days.
不知道你能否让我在你这里住几天。
I grew a beard during the trip.but I shaved it off when I came home.
我在旅行时留了胡子，但我回到家时就把它刮了。