You may use any reference materials you need to answer the quiz.

回答这些问题时，你可以参考任何资料。

youdao

The answer is no, because it's impossible to be sure that your reference frame is without any accelerations.

答案是否定的，因为我们不能将其确定下来,我们选用的参考系是否有加速度存在。

youdao

A typical search engine is a reference librarian: Ask it a question, and it suggests where to find the answer.

一个常用的搜索引擎被认为是一个可供参考的图书馆：你问它一个问题，它反馈给你找到问题答案的地址。

youdao

If I haven't solved the problem, let me solve it, and store the answer away for later reference.

让我解决它，然后保留答案以备下次调用。

麻省理工公开课 - 计算机科学及编程导论课程节选

The only way I can answer it is to reference my own youth coaching experience.

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When the words finally come, they often contain the answer to the original question along with a slew of related thoughts, and maybe a reference to a good book or two.

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