We must work hard, but equally we must get sufficient rest.
我们必须努力工作，但同时也要有充分的休息。
And what's more, lack of sufficient rest will interfere with the morning classes.
再者，缺乏足够的休息会干扰到第二天的学习。
Without force sufficient to overcome the resistance, bodies at rest will never move.
没有足够克服阻力的力，静止的物体决不会运动。
Without force sufficient to overcome the resistance, bodies at rest will never move.
没有足够克服阻力的力，静止的物体决不会运动。
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