白天假装快乐英语怎么说

在英文中，"白天假装快乐"可以用"put on a brave face during the day"来表示。这个短语的意思是在白天装出勇敢的样子，尽管内心并不感到快乐。
来源：这个短语可能源自英国谚语"put on a brave face"，意思是装出勇敢的样子，尽管内心感到害怕或不安。
一些例句：
She's been putting on a brave face during the day, but at night, she can't stop crying. 她白天装出勇敢的样子，但晚上却哭不停。
He's been putting on a brave face during the day, but I can tell he's really struggling. 他白天装出勇敢的样子，但我能感觉到他真的很难受。
I've been putting on a brave face during the day, but I'm really worried about my job security. 我白天装出勇敢的样子，但我真的很担心我的工作安全。