春天来了，河面上的冰开始融化。

With spring arriving, the ice on the river is starting ___to thaw.

两国领导人的友好会谈标志着长期紧张关系的缓和。

The friendly talks between the leaders marked a ___thawing in the long-standing tensions between the two countries.

在烹饪前，确保冷冻鱼完全解冻是很重要的。

It's important to make sure the frozen fish is completely ___thawed before cooking.