When chatting in public, it's important to keep your voice down so you don't disturb others around you. Sometimes, people talk loudly without realizing it, especially when they're excited. Also, if you're watching something on your phone, it's polite to use headphones so only you can hear it.
在公共场合聊天时,保持低音量很重要,以免打扰到周围的人。有时候,人们在兴奋时会不自觉地大声说话。另外,如果你在手机上看东西,最好使用耳机,这样只有你自己可以听到。