caking with medium-expansion and fusion

例句：

1. 1.The glue held the pieces of wood together.
   胶水把木头的碎片粘合在一起。
2. 2. The two countries are trying to amalgamate their economies.
   这两个国家正试图合并它们的经济。
3. 3.The scientist used a special glue to fix the broken pieces of glass.
   科学家用一种特殊的胶水来固定破碎的玻璃片。