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
What-are you doing?
你在做什么？
Better some of a pudding than none of a pie.
聊胜于无。
Yes, my brother Bob is coming with me to the airport to see me off.
有，我兄弟鲍勃将和我一起到机场，送我上飞机。