Delta system
[电] 角接系统
🧩 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
Would you like to sign the contract now?
你现在要签这合同吗？
What on earth has happened to trouble you so?
到底发生什么事让您如此发愁？
We're so proud of you.
我们十分为你骄傲。