1N-MASS 酸 An acid is a chemical substance, usually a liquid, which contains hydrogen and can react with other substances to form salts. Some acids burn or dissolve other substances that they come into contact with. 酸
...citric acid.
柠檬酸
Acids in the stomach destroy the virus.
胃酸能杀死病毒。
2ADJ-GRADED (物质)含酸的,酸性的 An acid substance contains acid. (物质)含酸的,酸性的
These shrubs must have an acid, lime-free soil.
这些灌木必须生长在不含石灰的酸性土壤环境。
acidity
...the acidity of rainwater.
雨水的酸性
3ADJ-GRADED (水果或饮料)酸味的,酸的 An acid fruit or drink has a sour or sharp taste. (水果或饮料)酸味的,酸的
These wines may taste rather hard and somewhat acid.