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TOEFL IELTS BNC: 1597 COCA: 3238
*acid¹
/ˈæsɪd ||; ˈæsɪd/noun [C,U] (in chemistry) a liquid substance that can dissolve metal and may burn your skin or clothes. Acids have a pH value of less than 7. (化学)酸: sulphuric acid 硫酸 ☞Look at alkali and base. 参看 alkalibase ☞picture at pHpH插图
acid²
/ˈæsɪd ||; ˈæsɪd/adj
1 (used about a fruit, etc) with a sour taste (指水果等)酸的,酸味的
2 (also acidic /əˈsɪdɪk ||; əˈsɪdɪk/) containing an acid 含酸的;酸性的: an acid solution 酸性溶液 [OPP]Look at alkaline. 参看 alkaline ☞picture at pHpH插图
TOEFL IELTS BNC: 1597 COCA: 3238
acid1/ˋæsId; ˈæsəd or ˈæsId/ n [C,U] a liquid chemical substance. Some types of acid can burn holes in things or damage your skin 酸〔一种液体化学物质〕: hydrochloric acid 盐酸 acidic /əˋsIdIk; əˈsIdIk/adj acidity /əˋsIdətI; əˈsIdəti or əˈsIdIti/n [U]

acid2 adj 1 having a very sour taste 酸(味)的﹐酸涩的 2 acid remark/comment something you say that uses humour in an unkind way to criticize someone 尖刻的言论/评论 3 containing acid 含酸的: an acid solution 酸性溶液
TOEFL IELTS BNC: 1597 COCA: 3238
acid acidacids noun(in chemistry) a liquid substance that burns things or makes holes in metal

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