Radioactive calcium
[医] 放射性钙
🧩 词语组成解析
🗣️ 情景例句
Too easy?
太简单？
He's not feeling very well today.
今天他觉得不舒服。
He has pointed out that the tree is a useful source of income as tour-ists have been coming from all parts of the country to see it.
他指出，由于人们从全国各地纷纷前来参观这棵树，