develop的名詞是什么

　　We need to develop local industries.

　　我們需要發展地方工業。

　　These clashes could develop into open warfare.

　　這些沖突可能會發展成公開的戰爭。

　　He hoped their acquaintance would develop further.

　　他希望他們的交情會進一步發展。

　　Do the emotions develop in parallel with the intellect?

　　情感與智力同步發展嗎？