Corundume
氧化铝
🗣️ 情景例句
When would you be fond of receiving the call?
你喜欢什么时候叫您？
The old lady takes delight in visits from her grandchildren.
那个老妇人以孙辈门看她来为乐。
When the fire had at last been put out, the forest authorities ordered several tons of a special type of grass-seed which would grow quickly.
在大火最后被扑灭后，森林管理当局订购了好几吨一种生长迅速的特殊类型的草籽。