Lesson 126 Have to and do not need to 不得不和不必要

immediately [iˈmiːdiətli] adv. 立即地

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A: If anything happens, let me know immediately, please.

B: OK. I'll keep you updated.

A：如果发生什么事，请马上通知我。

B：好的，我会和你联络的。

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