constructor() {
As soon as we try to install a package with dnf, we’ll get an error. We need to use rpm-ostree to manage packages.。业内人士推荐快连下载安装作为进阶阅读
# Create with a custom label，详情可参考搜狗输入法下载
НХЛ — регулярный чемпионат
Third: Keep it Untouchable (Object.defineProperty)