这些相同的表情，在世界范围内传达的意思都相同吗？ Is one person's smile another's grimace?一个人做笑脸会不会也是在做鬼脸呢？ Charles Darwin theorized that emotional expression was a common human feature.查尔斯·达尔文的理论是情绪表达是人类的共同特点。 But he was in ...