how to give effective presentation
... Health and safety in the workplace健康并且安全的工作环境 How to give effective presentation 如何进行有效的演讲 How to deal with difficult customers 怎样搞定难缠的客户 ...
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how to give effective presentation
如何进行有效的演讲
以上为机器翻译结果，长、整句建议使用 人工翻译 。