[词语]the/an acid test
[含义]严峻的考验;最终的考验
[趣释]【物事喻指】用化学方法测试金属合金的成分时,常常要加硝酸(nitric acid)或盐酸(hydrochloric ac0sum7xhAyuBUoQ9gqk6xmVJ8FKtEvtEzSji6Xp6axr(试读)...