Pcd
abbr. 节圆直径（Pitch Circle Diameter）；巴拿马运河局（Panama Canal Department）
🗣️ 情景例句
How is he, Philip?
他怎样了 ，Philip？
Are most people against the proposal?
是多数人都反对这个提议吗？
that given a planet only approximately like our own, life is almost certain to start.
如果设想有一颗行星和我们地球的情况基本相似，那几乎肯定会产生生命。