google下，网上一股脑推清华的conda源，实际上谁用谁知道，垃圾的很，非常不稳定。果断切回默认的源，并且加上本地的proxy：
channels:
- defaults
# Show channel URLs when displaying what is going to be downloaded and
# in 'conda list'. The default is False.
show_channel_urls: True
allow_other_channels: True
proxy_servers:
http: socks5://127.0.0.1:1080
https: socks5://127.0.0.1:1080
ssl_verify: False本地的代理用的香港腾讯云加北京腾讯云中转，效果杠杠的！麻麻再也不担心我无法下载安装包了！