在演讲中添加幽默元素，能够增强与观众的亲和力，减少紧张气氛，令观众精力集中，增强演讲的效果和持久力，使演讲被观众记得更牢。

Including humor in a speech improves audience rapport, reduces tension, keeps the audience alert and focused, improves impact and retention, and makes the speech more memorable.

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一些绿茶爱好者认为喝绿茶可以增强锻炼的持久力、加快脂肪代谢。但支持这个说法的研究时断时续。

Some green tea fans think drinking tea increases endurance while exercising and improves fat metabolism. But research that backs up this claim is spotty.

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