FT Edit: Access on iOS and web
Because immigrants are likely to be of working age and employed, they also paid nearly $100,000 more in taxes than the average native-born American, the study found. In their absence, national debt would reach approximately 200% of GDP, rather than the currently estimated 120%.，更多细节参见safew官方下载
Opens in a new window。爱思助手下载最新版本是该领域的重要参考
输出：[4,2,4,-1,4]（最后一个 3 绕一圈找到 4）