Orthosilicate
正硅酸盐
🗣️ 情景例句
Will I be able to receive the goods by the end of September?
我可以在9月底以前收到货吗？
The Christmas tree is gorgeous.
圣诞树真华美。
She played basketball after school, and then walked home.
放学后她打了篮球，然后步行回家。