Some people talk aloud on public transport because they enjoy socializing. They might not mind if others overhear their conversation, or they might even want to include others in it. For some, talking is a way to pass the time during travel, and they might feel more comfortable speaking aloud than texting.
一些人在公共交通工具上大声说话是因为他们喜欢社交。他们可能不介意别人听到他们的对话,甚至可能希望其他人参与其中。对于一些人来说,说话是一种在旅行过程中打发时间的方式,他们可能觉得大声说话比发短信更舒服。