日子来，日子去，而昨天是最后的一天。

And the days came, and the days went, and yesterday was the last day.

youdao

而昨天的书面公告中，这些文字都消失了。

Those words were absent in yesterday's written announcement.

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而昨天，道琼斯上升了81点，金价回落了少许。

And yesterday, the Dow rose 81 points, while the price of gold slipped a little.

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Aluminum and magnesium are both made by ionic liquid electrolysis, just as I showed you last day.

铝和镁都是,由离子液体电解而成，就像我昨天讲的。

麻省理工公开课 - 固态化学导论课程节选