Delta bond
[化] δ键
🧩 词语组成解析
delta
['deltə]
n. 希腊语字母表第四字母δ;（河流的）三角洲;[数]变量增量;
🗣️ 情景例句
There you go.
东西来了。
We never know the worth of water till the well is dry.
井干方知水可贵。
As he had never been there before, he found a great deal to interest him.
由于他从未去过那儿，结果他发现许多有趣的东西。