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.
在公共場合聊天時,保持音量低下很重要,這樣才不會打擾到身旁的其他人。有時候,人們在興奮時會不自覺地大聲說話。另外,如果你在手機上看東西,最好使用耳機,這樣只有你自己能聽見。