Delta acid
[化] δ酸; 2-萘酸-7-磺酸(染料中间体)
🧩 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 like playing basketball and badminton.
我喜欢打篮球和羽毛球。
Keeping is harder than winning.
创业不易，守业更难。
As it was extremely narrow, the man was unable to move,
由于烟囱太窄，那人无法动弹。