怎麼進行磁力下載?

需要什麼設置嗎?我現在下不了~

http://wiki-zh.bitcomet.com/%E4%BD%BF%E7%94%A8bitcomet%E4%B8%8B%E8%BD%BDbt%E4%BB%BB%E5%8A%A1#%E7%9B%B4%E6%8E%A5%E4%BB%8E%E6%B5%8F%E8%A7%88%E5%99%A8%E4%B8%AD%E6%89%93%E5%BC%80%E7%A3%81%E9%93%BE