tears of joy，just for the pure friendship，selflessness and love embodier by these children

(there are)是谓语 省略了

Tears 是主语

of joy是定语, just for the pure friendship, selflessness and love是介词短语作状语

embodied by these children. 是过去分词短语作定语 修饰介词宾语the pure friendship, selflessness and love