Calcium ion
[医]钙离子
🧩 词语组成解析
ion
['aiən]
n. <物>离子;
🗣️ 情景例句
What does John do?
John现在做什么事？
His confidence can be destroyed by a harsh word.
他的信念，只要受到严厉的批评就会崩溃。
It makes no difference that the forgery may have been a very skilful one:
即使伪造得很巧妙，也不能付款，