understanding是不可数名词，意思为：协议；理解（力），谅解；认识，了解，理会；领会，领悟，悟性；同情（心）；判断力；默契，共识，同感；智力；融洽；【哲】知性。
understanding用法有一个动词 understand 意思是明白清楚的意思
而understood 就是这个动词的过去分词形式
understanding 就是这个动词的现在分词或者也叫做动名词形式
understanding
英[ˌʌndəˈstændɪŋ]
美[ˌʌndərˈstændɪŋ]
vt. 谅解; 理解，懂得; 熟知，通晓; 获知，理解;
vi. 理解，懂得; 表示同情或谅解; 据说;
n. 谅解; 认识，了解; 知识;
1、We have two traditional understandings of poverty.
2、We have very different understandings of what we mean about the inherent human dignity when we bring in our, I mean, in my sense, particularly religious understandings.
3、However, whether classic or progressive, understandings of volatility and volume are fundamental to assessing software projects.
4、Skillful hypnotherapists will convert these positive messages, new learnings and understandings into Post-Hypnotic Suggestions.
5、Conversations should lead to deeper understandings of the person you're with.
