"Ideally, you can keep the conversation going as much as possible with one topic of conversation."
- "Ideally, you can keep the conversation going as much as possible with one topic of conversation."
"ideally" 「理想」
"keep the conversation going" 「話を膨らませる」
"one topic of conversation" 「会話の話題」
My goal is to expand on one topic as much as possible.
My goal is to expand on one topic as much as possible.
I want to be able to develop one topic in depth someday.
日本語の「話を膨らませる」は、英語では **expand on** や **develop** を使うと自然に表現できます。
英語で「話題を広げる・膨らませる」と言いたいときは、**expand on a topic**（話題を広げる）や **develop a topic**（話題を発展させる）を使うのが自然です。
オーストラリア 
アメリカ合衆国 
