英汉词典

1. 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.

acid是什么意思

    e.g. ...citric acid...
           柠檬酸
    e.g. Acids in the stomach destroy the virus.
           胃酸能杀死病毒。

2. （物质）含酸的，酸性的
    An acid substance contains acid.

    e.g. 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。