当我们想用英文表达一个人“面带笑容”或某个人总是“假笑”时要怎么说呢？

本集《This Is Us》中Randall说：

I'm gonna put on a fake-ass smile. I'm gonna ask to speak to my mother privately. 我会带上一脸假笑，要求跟我妈单独聊一聊。

Put on a smile 脸带笑容，带上笑容

Nobody likes working retail, but you just gotta put on a smile and do it. 谁也不喜欢做零售业，但是你就得带上笑容去做。

面带笑容和假笑可不一样，那笑的特别假英文怎么说呢？

Have a fake smile on one's face 笑的特别假

I'm pretty sure he doesn't want us here. He just has a fake smile on his face to be polite. 我觉得他根本不想让我们在这。他假笑就是为了礼貌吧。

I don't like him because he always has a fake smile on his face. He's too fake. 我不喜欢他，因为他脸上总是挂着假笑。他好假。