Orthosilicate
正硅酸盐
🗣️ 情景例句
What is your cancellation policy?
我怎么退票？
If you trust before you try,you may repent before you die.
不经考验就依赖，不到瞑目便的悔。
'Then I'll come with you,' he answered.'There's always plenty to read in the waiting room!
“那我也跟你去，候诊室里总有很多东西可供阅读！”他回答。