Odu
[医][=optical density unit]光密度单位
🗣️ 情景例句
We couldn't afford it.
我们当时不够钱。
Don't have thy cloak to make when it begins to rain.
切莫临时抱佛脚。
Many of them have to wait six months for their goods.
许多顾客不得不等上半年才得到所需的商品。