Galumin
氧化铝钙
🗣️ 情景例句
the music, the concerts.
音乐，音乐会。
You've no ideas how much work there is.
你想象不到工作量有多大。
has spent his lifetime studying active volcanoes and deep caves in all parts of the world.
花了毕生的精力来研究世界各地的活火山和探洞。