Hello!
你好！

Each Spine license is for a specific, named user. Each person using Spine must have their own Spine license.
This means your friend shouldn't share a Spine license with you, as each Spine user is required to own their own copy of the software.
每个Spine许可证适用于特定的指定用户。 每个使用Spine的人都必须拥有自己的脊柱许可证。
这意味着您的朋友不应与您共享Spine许可证，因为每个Spine用户都需要拥有自己的软件副本。

As you can also read on our purchase page:
您也可以在我们的购买页面上阅读：

每个使用专业版的用户需要有自已单独的授权。

Spine: 购买 Spine
Support: Can I allow a friend or a group to use my Spine license%3F

The trial cannot be activated. Once you purchase Spine, a link will be sent to your email to download the Spine installer.
审判无法激活。 购买Spine后，会在您的电子邮件中发送一个链接以下载Spine安装程序。