具体分析如下:
wordwrap()函数可以按照指定的固定行长度格式化文本段落,让段落看起来更加整齐
上面的代码返回如下结果
TRADING ON MARGIN POSES ADDITIONAL RISKS AND IS NOT SUITABLE FOR ALL INVESTORS. A COMPLETE LIST OF THE RISKS ASSOCIATED WITH MARGIN TRADING IS AVAILABLE IN THE MARGIN RISK DISCLOSURE DOCUMENT.