noun 下载 🔗分享 氧化锶,锶土 A pale earth composed of strontium oxide (SrO) Examples : "The chemistry student carefully handled the vial of strontia, knowing its pale earth color indicated a high concentration of strontium oxide. " 这位化学系学生小心翼翼地拿着装有锶土的小瓶,因为他知道其淡土色表明氧化锶的浓度很高。 compound substance material chemistry element mineral 与AI对话词汇游戏阅读练习