Bisilicate
二硅酸盐, 偏硅酸盐
🗣️ 情景例句
But first things first.
但事有先后。
Thanks for coming to help on such a short notice.
谢谢你临时来帮忙。
The instrument was bought by my grandfather many years ago.
是我祖父在很多年以前买的。