一个人的精力和能力有限，借助外力事半功倍。
A person's energy and capacity is limited, effective use of external force.
年迈的父母有那个精力和能力管好孩子的衣食住行好好学习不掉队不学坏吗？
Elderly parents have the energy and ability to control child's life to learn not to bad did not lag behind it?
我的学习成绩一直很不错，我有精力和能力在学习之余帮助老师和同学们工作；
Second, my mark was always excellently, I have high spirit and ability to help teacher and student to work well.
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