如果你的演讲主题比较敏感或者你的信息涉及到机密，不管你掌握多少知识，在演讲中谈论到这些问题时都要小心谨慎。
No matter how much knowledge you have, if your subject is at all sensitive or your information is classified, be careful when discussing it during your impromptu speech.
你处事比较谨慎。
所以，下面列表是比较安全的剂量，以便于你可以及继续享用你的早餐咖啡。但是，比较谨慎的做法是每天的咖啡因摄入量不多于300毫克。
So, the bottom line is that's it's probably safe to go ahead and enjoy your morning cup of coffee, but it's prudent to keep your caffeine intake to under 300 milligrams a day.
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