(Austral./NZ informal)seek to extract a loan or favour from (someone). acid test, referring to possible resistance (because gold resists nitric acid)(澳／新西兰，非正式)设法从（某人处）获得贷款或好处
柯林斯高阶英汉双解学习词典释义
N-MASS
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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.
1. any of various water-soluble compounds having a sour taste and capable of turning litmus red and reacting with a base to form a salt
2. street name for lysergic acid diethylamide
Adjective
1. harsh or corrosive in tone;
"an acerbic tone piercing otherwise flowery prose""a barrage of acid comments""her acrid remarks make her many enemies""bitter words""blistering criticism""caustic jokes about political assassination, talk-show hosts and medical ethics""a sulfurous denunciation"