被墙，自行代理，或者修改安装脚本（懒_）
-
方式一：
curl -o- https://raw.githubusercontent.com/nvm-sh/nvm/v0.39.1/install.sh | bash -
方式二：
wget -qO- https://raw.githubusercontent.com/nvm-sh/nvm/v0.39.1/install.sh | bash
改为国内源：nvm node_mirror https://npm.taobao.org/mirrors/node/;nvm npm_mirror https://npm.taobao.org/mirrors/npm/