R&d
abbr. Research and Development 研究与开发
🗣️ 情景例句
How many people live in Turkey?
有多少人在土耳其生活？
Is he the tall man on the left?
他是在左边上的高个吗？
Last week, a group of Class 3 students decided to go to the museum in the centre of the town.
上星期，3班的一群学生决定去参观位于城镇中心的博物馆。