Ulcus durum
[医] 下疳
🧩 词语组成解析
溃疡
n. 硬粒小麦
🗣️ 情景例句
May I have a pillow and blanket, please?
能给我一个枕头和毛毯吗？
When guns speak it is too late to argue.
待到炮声响，辩论已莫及。
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。