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
Those were great days and we were very happy.
那些日子美好极了，我们过得很幸福。
You'd better wear a light jacket.It's chilly today.
你今天最好穿一件浅色的夹克衫。 今天很冷。
Her family are all music lovers.
她全家人都是音乐爱好者。