R&d
abbr. Research and Development 研究与开发
🗣️ 情景例句
How are you enjoying the game so far?
到现在为止你们喜欢这个游戏吗？
It's an honor to be speaking to you today.
今天跟你们说话至感荣幸。
He resolved to give up smoking.
他决心戒烟。