Have a breakfast: One can not keep full of energy in the whole day without breakfast.
早餐不可省：每天的早餐都要吃得好，以维护一天精力所需。
Exercise can help you keep fit, full of energy, work hard and you can do strenuous work persistently.
运动可以帮助人们保持身体健康、精力充沛、坚持做很辛苦的工作。
You are right. Good sleep can keep you full of energy.
你是对的，好的睡眠可以让你精力充沛。
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