Definition
To show no visible reaction of surprise, worry, or concern when something unexpected or alarming occurs.
眼皮也不眨一下；面不改色
He didn't bat an eyelid when the manager announced the company was going to lay off employees.
當經理宣布公司要裁員時，他面不改色。
She didn't bat an eyelid when her name was announced for Best Actress, as if she had expected it.
當她的名字被宣布為最佳女主角時，她面不改色，好像早就預料到了一樣。
She didn't bat an eyelid even after being told that her investment was completely lost.
即使被告知她的投資完全虧損，她也面不改色。