Yesterday was Sunday.

昨天是星期天。

《牛津词典》

Yesterday was Sunday and it was a nice day.

昨天是星期天，天气非常宜人。

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Yesterday was Sunday. We didn't go to school.

昨天是星期天，我们不用上学。

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"The good news is yesterday was Sunday and the Republicans could not file another lawsuit, " said Rep. Peter Deutsch, D-Florida.

CNN: Florida GOP asks judge to recuse himself

Yesterday was Sunday and nobody went out.

BBC: 'We are all in pain and agony'

Then on Saturday night, Marcus Agius took a personal decision to become the lightning rod for the criticism, to protect Barclays and Mr Diamond, so he decided to resign - which he told colleagues about on Sunday morning and was confirmed yesterday.

BBC: Diamond ��hounded out by MPs��