understand是一个英语单词，意思是懂，理解。
understand的造句如下：
1.Bits and pieces of things he'd read and heard were coming together, and he began to understand.
他把读到和听到的片段综合起来，便逐渐明白了。
2.One will never be able to understand why these political issues can acquire such force.
人们永远也不会明白为什么这些政治问题会有如此大的影响力。
3.It is important to understand the powerful economic and social forces at work behind our own actions.
重要的是，要理解在我们自身行动背后起作用的强大的经济和社会力量。
4.OBJECTIVE Compared the medical treatment expenses of emergency and outpatient service between county and township two different levels, to understood what operation of emergency medical service does in rural area.
目的通过对县、乡两级门诊、急诊医疗费用对比分析，观察急诊费用占农村地区医疗费用总支出的比重，了解急诊在农村医疗服务市场中的地位。
5.And further explained that the classical table of contents to understood literature own situation, grasps to the ancient book vein with the literature reorganizes, has the help function.
并且进一步说明古典目录对了解文献自身情况、对古籍脉络掌握和文献整理和文化的研究都有帮助作用。