If you only learn the grammar rules by heart and dont do enough exercises, it is certain that you cant understand them perfectly.
如果你仅仅牢记语法规则而不做足够的练习，你肯定不能充分理解它们。
If we only learn the grammatical rules by heart and don't do enough exercises, it is certain that we can't understand them perfectly.
如果我们只学习语法规则和没有做足够的练习，可以肯定的是，我们无法完全了解它们。
They have a balanced and healthy diet, do physical exercises regularly, get enough sleep, and work with high efficiency.
他们注重饮食均衡和健康、定期锻炼，保证充足的睡眠，而且能够保证很高的工作效率。
They have a balanced and healthy diet, do physical exercises regularly, get enough sleep, and work with high efficiency, .
他们注重饮食均衡和健康、定期锻炼，保证充足的睡眠,而且能够保证很高的工作效率。
Do you have enough time to finish all these exercises?
你有足够的时间去完成所有这些习题吗？
They have a balanced and healthy diet do physical exercises regularly get enough sleep and work with high efficiency.
他们注重饮食均衡和健康、定期锻炼，保证充足的睡眠而且能够保证很高的工作效率。
They have a balanced and healthy diet do physical exercises regularly get enough sleep and work with high efficiency.
他们注重饮食均衡和健康、定期锻炼，保证充足的睡眠而且能够保证很高的工作效率。
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