He said in an email that Apple's policy change is "a wonderful improvement" that shows Apple has improved the tone of its relationship with app developers.

他在给记者的一封邮件说苹果的政策改变是“一个不错的改进”，这说明苹果对其和应用开发者的关系的语气已经有所改变。

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Watch the tone of your email.

注意你邮件里的语气。

youdao

There's even an app to help you check the tone of your email!

甚至还有人开发了能帮你检验你邮件中的语气的app ！

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"The tone and content of the email was highly inappropriate and unacceptable by any standard, " the national organization wrote on its Facebook page.

CNN: Lessons from the sorority-girl e-mail rant