What's essential about the Primary Dealer Credit Facility is that they're opening up the discount window of lending beyond the member bank to primary dealers.

一级交易商信贷工具中,最本质的东西是,他们将会员银行的贴现窗口,向一级交易商打开了。

耶鲁公开课 - 金融市场课程节选

So how long you leave the window open.

你会让特定的窗口打开多长时间。

哈佛公开课 - 计算机科学课程节选