Odu
[医][=optical density unit]光密度单位
🗣️ 情景例句
It was only a tummy ache.
仅仅是肚子有点痛。
How ofter did I tell you to sit straight?
我告诉你多少次要坐正?
But, of the vertebrates, unpredictable Nature selected only snakes (and one lizard).
不过，当它们相互撕打时，毒液就成了利弊参半的武，可以杀死对方，也可以被对方的毒液杀死。