Tetraphosphate
四磷酸盐
🗣️ 情景例句
There was no way he could solve the problem.
他根本解决不了这个问题。
Your history paper is due.
你的历史课作业该缴了。
Until we are intelligent as to its laws and varieties,
直到我们理解了风俗的规律性和多样性，