我常反诘：“妈妈，可您不知道那笑是真是假呀！”

I would say, "But Mom, you don't know if that smile is real."

youdao

我常反诘：“妈妈，可您不知道那笑是真是假呀！”

I would say, "But Mom, you don't know if that smile is real."

youdao