Silicasol
硅溶胶
🗣️ 情景例句
We appreciate your interest in our firm, however, and thank you for writing.
我们感谢你对我们公司表示的兴趣，谢谢你的来信。
Is the plane leaving?
飞机要起飞了吗？
How are you getting there? By train?
你准备怎样走？坐火车去吗？