Tetrasilicate
四硅酸盐
🗣️ 情景例句
She's coming over this morning to help me with my math.
她今天早晨要过来帮我补习数学。
My sweater is blue.
我的毛衣是蓝色的。
Customs Officers are quite tolerant these days,
现在的海关官员往往相当宽容。