But whether you are fat or thin, young or old, the best hope you have of guarding your brain is to eat well and exercise.
无论你是胖是瘦，年轻还是年老，保卫大脑的最佳选择还是健康的饮食和锻炼。
The Ideal Teacher The ideal teacher may be young or old, tall or short, fat or thin.
理想（完美）老师 一个理想的老师也许是年轻的或是年长的，高的或矮的，肥的或是廋的。
There's one language used in every country. People who use it are young and old, short and tall, thin and fat.
有一种语言在每个国家都使用，使用这种语言的人有老也有小，有高有矮，有胖有瘦。
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