indifference surface

例句：

1. 1. He showed no signs of indifference to the situation.
   他对情况毫无兴趣。
2. 2. The teacher was very indifferent to the students' questions.
   老师对学生们的问题漠不关心。
3. 3. She was indifferent to the opinions of others.
   她对别人的意见漠不关心。