topicKK [ˋtɑpɪk] /ˈtɑpɪk/名詞1話題、主題The weather is always a safe topic at family dinners.天氣在家庭聚餐上永遠是個安全的話題。2題目、論題學術或寫作She still hasn't chosen a topic for her final paper.她還沒決定期末報告的題目。3主旨、要點Each paragraph should begin with a clear topic sentence.每個段落都應該以清楚的主題句開頭。