（二）具有批量控制移动电话卡的功能的；
Because if all you're doing is something
，推荐阅读新收录的资料获取更多信息
Performance & security by Cloudflare
Note: If any future in all() fails, the entire all() returns that error. All futures are started concurrently, but a single failure short-circuits the result.
use-package setup