Periostea
periosteum的复数
🗣️ 情景例句
He ventured his life to rescue a drowning child.
他冒着生命危险去抢救一个溺水的孩子。
It drives me crazy.
它使我快要发疯了。
There will only be standing room left for us next century!
到下个世纪我们就只有立足之地了。