Pdo
abbr. production design outline 产品设计草图
🗣️ 情景例句
Yeah, he's fine.
是的 ，他不错。
He likes playing the violin.
他喜欢拉小提琴。
The geologist needs to know what rocks the drill has reached,
地质学家需要知道钻头已经到达什么样的岩层，