Ulcus penetrans
[医] 穿透性溃疡
🧩 词语组成解析
溃疡
🗣️ 情景例句
Let me think.
让我想想。
More die by food than by famine.
饥馑而死的少，饱食而死的多。
for it produces a resentful animal who at a later stage may well turn man-killer.
因为这种方法训练会使动物反感，在以后某个时期可能会变成伤人的动物。