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.

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。

youdao

The Clovis people were believed to be the first to colonise North America after emigrating from Asia, and are said to be the ancestors of all present day Native American tribes.

克劳·维斯人被认为是第一批从亚洲移居到北美洲开拓殖民地的人们，据说是所有现在印第安部落的祖先。

youdao

It is crucial to make the good impression from the very first day.

从第一天就留下个好印象是十分重要的。

youdao

Newborns need a vaccination within the first day of life to prevent transmission of the virus from their mothers, and babies need two more doses within the first six months for full immunity.

VOA: standard.2010.07.26

I'm going to go away from studying imperfect competition and go back and visit something we studied almost the first day or maybe the second day, and that election.

我将放下不完全竞争,而是返回去讲我们几乎是第一天,或者是第二天学习的一些内容,就是选举

耶鲁公开课 - 博弈论课程节选

Although I may not be feeling it today, I am going to attack the day from the absolute first minute of the day all the way to the last.

FORBES: Three Ways to Get the Most out of Your Five-Day Work Week

Six months passed from the day Be The Match first contacted me to the day of donating.

CNN: Why I donated my bone marrow

The spokesperson said the service had been the first of the day from Rhymney to Barry in the Vale of Glamorgan.

BBC: Arriva train hits tree in Rhymney Valley