When version 3.0 of the operating system came out, even the updates were minimal and only added essential functionality missing from the first release.

当操作系统的3.0版本发布后，即使是更新也非常微小，只是添加了首版中缺少的几个基本功能。

youdao

When version 3.0 of the operating system came out, even the updates were minimal and only added essential functionality missing from the first release.

当操作系统的3.0版本发布后，即使是更新也非常微小，只是添加了首版中缺少的几个基本功能。

youdao