Getting smarter involves a combination of learning new information, retaining that information, and maintaing the health of your brain.
更加聪明的工作包括学习新的信息，并且记住它，保持脑部健康。
Muscles also help in performing activities necessary for growth and for maintaing a strong, healthy body. For example, people use muscles in the jaw to chew food.
肌肉在人体成长和保持健康所需的活动中亦有帮助作用，例如，使用腭部的肌肉来咀嚼食物。
Muscles also help in performing activities necessary for growth and for maintaing a strong, healthy body. For example, people use muscles in the jaw to chew food.
肌肉在人体成长和保持健康所需的活动中亦有帮助作用，例如，使用腭部的肌肉来咀嚼食物。
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