I 've just received an offer letter from Yale.

我刚收到耶鲁大学的录用书。

Please note that this is not an official offer letter.

请注意这不是一封官方信件。

Attached you could find your offer letter and welcome letter.

你可以找到你所附信件和欢迎信中提供。

We request that you keep the information included in this offer letter confidential.

我们要求您保留该信息包含在此信中提供的机密。

Offer follow up and prepare relevant paper document, e. g. offer letter, contract, health exam.

进行书面文件的跟踪和准备，例如，提供聘用涵、合同、健康测验。