网上下载不下来，我通过下载下来的，使用：将下载的压缩包解压到当前目录，然后进入文件夹即可看到nexus-3.18.0-01-mac.tgznexus-3.18.0-01-win64.zipnexus-3.18.0-01-unix.tar.gznexus-2.14.5-02.warnexus-2.14.13-01-bundle.zipnexus-2.14.13-01-bundle.tarnexus-3.15.2-01-win64.zipnexus-3.15.2-01-unix.tar.gznexus-3.15.2-01-mac.tgznexus-3.5.0-02-mac.tgznexus-3.5.0-02-uni