https://developer.mozilla.org/zh-CN/docs/Web/CSS/word-break ~~~ <!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8" /> <meta http-equiv="X-UA-Compatible" content="IE=edge" /> <meta name="viewport" content="width=device-width, initial-scale=1.0" /> <title>Document</title> <style> .box { background-color: #f00; color: white; width: 200px; line-height: 2; } </style> </head> <body> <div class="box"> 我我我我我我我我我我我嚄嚄嚄我我我我我我哦我我我我我 </div> </body> ~~~