Learn a useful English phrase to use at the beginning of a formal email, when you do not know the name of the person or persons you need to address it to ...

Watch your language, Mike! The windows are open, and they can hear everything you say. I think we should go somewhere else to complain about Martin. 小心说话，迈克！ 窗户开着，他们能听到你说的每一句话。 我觉得咱们应该去别的地方抱怨马丁。 You ...