Bitumite
烟煤
🗣️ 情景例句
Do? I don't know.
读什么 ？我不知道。
At the moment, he is a bit worried about his English.
就在那时候，他有点担心他的英语。
as the wave leaves the particles behind back to its starting point again.
当波浪把微粒留在身后时又回到出发点。