Ferrosilicate
铁硅酸盐
🗣️ 情景例句
Thank you.
谢谢你。
Children enter primary school at the age of 7.
孩子们7岁进小学。
It was necessary, therefore, to invent instruments that neither slumbered nor slept.
因此，有必要发明一种仪器，既不打盹儿，也不睡觉。