Osseocolla
骨胶
🗣️ 情景例句
Is it that serious a problem, Grandpa?
这个问题有那么重要吗，爷爷？
You should wear a raincoat, It's rainy today.
你应该穿一件雨衣，因为今天下雨。
Li Lei ran much faster than the other boys.
李磊跑得比其他男孩快得多。