Indifference is also the preferred option among those who are socially lazy.

　　對于怠于社交的人來說，保持冷漠也不失為首選。

　　What she said is a matter of complete indifference to me.

　　她的話對于我來說完全無關緊要。

　　She had developed a shell of indifference.

　　她養成一副冷漠的外表。

　　He adopted an air of indifference.

　　他擺出一副滿不在乎的樣子。