Cassic acid
[医] 山扁豆酸
🧩 词语组成解析
🗣️ 情景例句
Would you please hand me your customs declaration form?
请出示您的申报表给我？
The sleeping fox catches no poultry.
睡觉的狐狸抓不到鸡鸭。
and so the tools of long ago have remained when even the bones of the men who made them have disappeared without trace.
因此，尽管制造这些工具的人的骨头早已荡然无存，但远古时代的石头工具却保存了下来。