Thortveitite
钪钇石
🗣️ 情景例句
The good news is that the Levinsons have come by
好消息是Levinson夫妇已来这儿
My brother is twice as tall as your sister.
我弟弟比你妹妹高一倍。
It is not a simple competition for a fixed amount of food determined by the physical environment,
它已不是为了争得物质环境所决定的有限食物而进行的简单竞争了，