elaborate on   (TTS發音)

explain in detail（a plan，a theory，etc. ）詳細說明（計劃、理論等）

    He is going to elaborate on his design. 他將對他的設計作詳細的說明。

    The physicist is asked to elaborate on his theory. 這位物理學家被邀請詳細解釋他的理論。