[2] We must talk with them in English. Please be friendly and courteous to them.
我们一定要用英语和他们交谈，对他们要友好、礼貌。
Business English usually has six key principles: the correct, complete, clear, concise, considerate and courteous.
商务英语通常有六大原则：正确、完整、清楚、简明、体谅和礼貌。
Business English usually has six key principles: the correct, complete, clear, concise, considerate and courteous.
商务英语通常有六大原则：正确、完整、清楚、简明、体谅和礼貌。
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