Once the glass is all separated, it's crushed into tiny pieces, called " cullet" .

一旦玻璃分拣完成，压成细小的碎——玻璃渣。

These cullets melt at a lower temperature than new glass, because the ingredients and have already been mixed and fused together when that glass was initially made.

碎玻璃的熔点低于新玻璃，因为新的玻璃制作之初那成分已经混合在一起。