Sent_en: 2zh Besides attribution, the license requires that modifications are made available under the same conditions, a principle known as "copyleft" and most frequently applied to computer software such as the free operating system Linux.
Sent_yy: 除了署名，该许可还要求在相同的条件下进行修改，这一原则被称为“非盈利版权”，最常应用于免费操作系统Linux等计算机软件。