Definition
to speak at length about a specific topic, often causing others to become uninterested.
長篇大論，滔滔不絕
He held forth on the plan during the meeting, causing everyone to feel bored.
他在會議上長篇大論地講述這個計劃，讓每個人都感到無聊。
She loves to hold forth on her travel experiences at parties, which usually makes guests gradually lose interest.
她喜歡在派對上滔滔不絕地講述她的旅行經歷，這通常讓客人逐漸失去興趣。
In class, the teacher held forth continuously, and the students began to find it hard to concentrate.
在課堂上，老師不停地長篇大論，學生們開始覺得難以集中注意力。