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
I've been thinking about it for weeks now.
为这事我想了几个星期。
Weak men wait for opportunity, but the strong men make it.
若者等待机会，强者创造机会。
John's day.
约翰的一天。