你昨天做的列表可能有些帮助，不过你还是再想一想这个问题。

The list you made yesterday might help, but give the question some thought.

youdao

不过，昨天的空气看起来比在戈壁的还污浊。

Yesterday, however, the air looked more gunky than Gobi.

youdao

不过从昨天起，第二阶段明显开始了。

But yesterday marked the beginning of phase two.

youdao

Although it's not defined in that newspaper that you're reading back there in row twelve, the Market Revolution is not reported in this morning's newspapers; actually it probably is, the markets are going bad, although they went back up yesterday.

但是那张报纸里面没有定义,我说的就是坐在十二行看报纸的同学,今天的早报没有报导市场革命,不过也可能真是,因为现在市场不景气,虽然昨天刚刚有些反弹

耶鲁公开课 - 美国内战与重建课程节选