看到孩子们在战争中的遭遇令人心碎。

It was ___heartbreaking to see the children suffering in the war.

看到那只流浪狗被遗弃在雨中，真是令人心碎。

It was ___heartbreaking to see the stray dog abandoned in the rain.

看到那些无家可归的孩子，真是令人心碎。

Seeing those homeless children was truly ___heartbreaking.