维生素B12的是非
根据美国医学科学院的报告，至今未发现过量摄入维生素B12会产生任何不良反应，所以没有设置每日摄入量的上限。例如，在一次临床试验中，试验对象每天口服1000微克维生素B12，长达5年，也未发现有任何不良反应。国内文献偶尔有注射维生素B12制剂导致过敏的报道，但那是注射，不是口服，很可能是由于制剂里的杂质导致的。
24 1 月, 2024
梅琳达·盖茨在杜克大学2013年毕业典礼上的演讲
I believe we are finally creating the scientific and technological tools to turn the world into a neighborhood. And that gives you an amazing ethical opportunity no one has ever had before. I hope you will use to the tool of technology to do what you already had it in your heart to do. To connect. To make of this world a brotherhood and a sisterhood.
BBC地道英语 – Recharge one’s batteries
“Recharge one’s batteries” 通常用来表示 “某人非常疲劳，需要通过放松来恢复体力、养精蓄锐”。这个表达将身体的精力值比作 “battery（电池）” 的电量，而补充精力就相当于 “recharge（充电）”。
苹果CEO蒂姆·库克在加劳德特大学2022年毕业典礼上的演讲
I hope you will hold tightly to the community you’ve built here because whatever life brings, your success will be sweetened and your setbacks softened if you can share them together. Most of all, I hope you will find happiness and joy, meaning and fulfillment, and a life that gives to you all that you ask of it.
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