You would say:"E key".

你就会说，E键。

youdao

In the first part of the test, participants are asked to push the "e" key for either black faces or negative words and the "I" key for white faces or positive words.

测试的第一步，要求受试者看见黑人面孔或负面词汇时按“E”键，看见白人面孔或正面词汇时按“I”键。

youdao

Enter your details, and within a minute or two you will receive an e-mail with an API key, as well as links to documentation and other relevant resources.

输入您的详细信息，一两分钟之后您将收到一封电子邮件，该邮件将向您提供一个 API 密匙以及访问文档和其他相关资源的链接。

youdao

We'll be in the key of E-flat.

用降E调

耶鲁公开课 - 聆听音乐课程节选

Today it rings -- in the key of E -- each hour, while a series of quarter bells chime every 15 minutes.

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