他那不敏感的评论深深伤害了她的感情。

His ___in___sen___sitive comment hurt her feelings deeply.

他对自己同事的苦恼完全无动于衷。

He was completely ___in___sen___sitive to his colleague's distress.

独处时间过长会让人变得对他人的需求麻木不仁。

Spending too much time alone can make a person ___in___sen___sitive to the needs of others.