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你能给予他人的最伟大的礼物是你的时间和你的声音。
I'm not a singer, I'm an entertainer.
The only way to avoid being miserable is not to have enough leisure to wonder whether you are happy or not.
最好的艺术几乎是一种报道形式。
"In observational studies, we often have to rely on assumptions that are not directly testable."