第一天过去了。

The first day passed.

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在这儿的第一天我想：“噢，我该怎么挺过去呀？”

On my first day here I thought, "Ooh, how will I survive?"

《柯林斯英汉双解大词典》

孩子们在3岁的时候第一次被组织到实验室，讨论他们过去印象深刻的事情，比如第一次和家人的放松旅行，第一次遇到的跳舞失误，以及第一天上学等等。

The children were organized to the laboratory for the first time at the age of 3 and discussed impressed things from their past, such as the first relaxing trip with your family, the first dancing accident you met, and the first day of school.

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