R&d
abbr. Research and Development 研究与开发
🗣️ 情景例句
This is a wonderful example of Spanish-style architecture.
这是栋很棒的典型西班牙式建筑。
Work today,for you know not how much you may be hindered tomrrow.
今朝有事今朝做，明朝可能阻碍多。
I'd like to get this film developed.
我要冲洗这卷胶卷。