Tetrasilicate
四硅酸盐
🗣️ 情景例句
I'm not convinced.
我持保留态度。
They are looking forward to the summer vacation.
他们正盼望着暑假的来临。
The inner workings of our own brains we feel to be uniquely worthy of investigation,
我们觉得，只有我们大脑内部的活动情况才值得研究，