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
Is this harmful to kids?
这对孩子有害吗？
The population of Africa is growing by leaps and bounds.
非洲的人口正在极其迅速地增长。
True eccentrics never deliberately set out to draw attention to themselves.
真正古怪的人从不有意引人注意。