Oolite
n. [地质]鱼卵石, 鱼卵状石灰石,鲕粒岩
🗣️ 情景例句
We must prepare ourselves to have a hard time.
我们必须准备过艰苦的日子。
I wonder what happened to him.
我不知道他出什么事了。
Once the existence of this wave-length had been discovered,
一旦这种波长的实际存在被发现，