Middle English expoune (in the sense explain (what is difficult)): from Old French espon-, present tense stem of espondre, from Latin exponereexpose, publish, explain, from ex-out + ponereput. The origin of the final -d(recorded from the Middle English period) is uncertain (compare with compound, propound)
英英释义行业释义网络释义
vern
1.add details, as to an account or idea; clarify the meaning of and discourse in a learned way, usually in writing;
She elaborated on the main ideas in her dissertation