lead-alkali glass

例句：

1. 1. This window is made of lead-alkali glass, which can prevent the sun's harmful UV rays from entering the room.
   这个窗户是用碱玻璃制成的，可以防止太阳有害的紫外线进入房间。
2. 2. The lead-alkali glass in the bottle has been broken, so it's not safeto drink.
   瓶子里的碱玻璃已经碎了，所以不能喝了。
3. 3. The lead-alkali glass was used for making windows and doors, but it was replaced by other materials in the 20th century.
   碱玻璃在20世纪被用来制作窗户和门，但后来被其他材料所取代。