R&d
abbr. Research and Development 研究与开发
🗣️ 情景例句
the girl he was in love with in college married someone else.
他大学时代所爱的女孩跟别人结婚了。
Remember me to your father-in-law please.
请替我问候你的岳父。
The man obviously wanted to talk.
这人显然是想聊天。